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68938097 = 419771721
BaseRepresentation
bin1000001101111…
…10100101110001
311210201102021212
410012332211301
5120122004342
610501325505
71464651464
oct406764561
9153642255
1068938097
1135a06238
121b106895
1311389397
1492272db
1560bb182
hex41be971

68938097 has 8 divisors (see below), whose sum is σ = 70732872. Its totient is φ = 67148800.

The previous prime is 68938081. The next prime is 68938117. The reversal of 68938097 is 79083986.

It can be written as a sum of positive squares in 4 ways, for example, as 15808576 + 53129521 = 3976^2 + 7289^2 .

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 68938097 - 24 = 68938081 is a prime.

It is a super-2 number, since 2×689380972 = 9504922435962818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68938697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39197 + ... + 40917.

It is an arithmetic number, because the mean of its divisors is an integer number (8841609).

Almost surely, 268938097 is an apocalyptic number.

It is an amenable number.

68938097 is a deficient number, since it is larger than the sum of its proper divisors (1794775).

68938097 is a wasteful number, since it uses less digits than its factorization.

68938097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 68938097 is about 8302.8969040932. The cubic root of 68938097 is about 410.0338996361.

The spelling of 68938097 in words is "sixty-eight million, nine hundred thirty-eight thousand, ninety-seven".

Divisors: 1 41 977 1721 40057 70561 1681417 68938097