68255657 has 8 divisors (see below), whose sum is σ = 72833760. Its totient is φ = 63776160.

The previous prime is 68255641. The next prime is 68255659. The reversal of 68255657 is 75655286.

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

It is not a de Polignac number, because 68255657 - 2⁴ = 68255641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68255659) 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, 23219 + ... + 25992.

It is an arithmetic number, because the mean of its divisors is an integer number (9104220).

Almost surely, 2^68255657 is an apocalyptic number.

It is an amenable number.

68255657 is a deficient number, since it is larger than the sum of its proper divisors (4578103).

68255657 is a wasteful number, since it uses less digits than its factorization.

68255657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49303.

The product of its digits is 504000, while the sum is 44.

The square root of 68255657 is about 8261.6981910501. The cubic root of 68255657 is about 408.6763918990.

The spelling of 68255657 in words is "sixty-eight million, two hundred fifty-five thousand, six hundred fifty-seven".