268860657 has 16 divisors (see below), whose sum is σ = 395474688. Its totient is φ = 161416320.

The previous prime is 268860643. The next prime is 268860667. The reversal of 268860657 is 756068862.

It is not a de Polignac number, because 268860657 - 2⁸ = 268860401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268860667) 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 15 ways as a sum of consecutive naturals, for example, 82473 + ... + 85670.

It is an arithmetic number, because the mean of its divisors is an integer number (24717168).

Almost surely, 2^268860657 is an apocalyptic number.

It is an amenable number.

268860657 is a deficient number, since it is larger than the sum of its proper divisors (126614031).

268860657 is a wasteful number, since it uses less digits than its factorization.

268860657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168200.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 268860657 is about 16396.9709702737. The cubic root of 268860657 is about 645.4199992734.

The spelling of 268860657 in words is "two hundred sixty-eight million, eight hundred sixty thousand, six hundred fifty-seven".