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68003893 = 1723173923
BaseRepresentation
bin1000000110110…
…10100000110101
311201221221210201
410003122200311
5114402111033
610425320501
71454011036
oct403324065
9151857721
1068003893
1135428371
121a936131
13111200b9
149062a8d
155e8447d
hex40da835

68003893 has 8 divisors (see below), whose sum is σ = 75135168. Its totient is φ = 61220544.

The previous prime is 68003879. The next prime is 68003899. The reversal of 68003893 is 39830086.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68003893 - 213 = 67995701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68003899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86571 + ... + 87352.

It is an arithmetic number, because the mean of its divisors is an integer number (9391896).

Almost surely, 268003893 is an apocalyptic number.

It is an amenable number.

68003893 is a deficient number, since it is larger than the sum of its proper divisors (7131275).

68003893 is a wasteful number, since it uses less digits than its factorization.

68003893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173963.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 68003893 is about 8246.4472956541. The cubic root of 68003893 is about 408.1732992016.

The spelling of 68003893 in words is "sixty-eight million, three thousand, eight hundred ninety-three".

Divisors: 1 17 23 391 173923 2956691 4000229 68003893