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69145037 = 1347113167
BaseRepresentation
bin1000001111100…
…01000111001101
311211002221011022
410013301013031
5120200120122
610510003525
71466503013
oct407610715
9154087138
1069145037
1136037765
121b1a65a5
131142c630
14927c8b3
15610c642
hex41f11cd

69145037 has 8 divisors (see below), whose sum is σ = 76048896. Its totient is φ = 62467632.

The previous prime is 69145003. The next prime is 69145057. The reversal of 69145037 is 73054196.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-69145037 is a prime.

It is a super-2 number, since 2×691450372 = 9562072283462738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69144988 and 69145006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69145057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55973 + ... + 57194.

It is an arithmetic number, because the mean of its divisors is an integer number (9506112).

Almost surely, 269145037 is an apocalyptic number.

It is an amenable number.

69145037 is a deficient number, since it is larger than the sum of its proper divisors (6903859).

69145037 is a wasteful number, since it uses less digits than its factorization.

69145037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113227.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 69145037 is about 8315.3494815311. The cubic root of 69145037 is about 410.4437729195.

The spelling of 69145037 in words is "sixty-nine million, one hundred forty-five thousand, thirty-seven".

Divisors: 1 13 47 611 113167 1471171 5318849 69145037