256087701 has 24 divisors (see below), whose sum is σ = 374834304. Its totient is φ = 168463680.

The previous prime is 256087697. The next prime is 256087703. The reversal of 256087701 is 107780652.

It is not a de Polignac number, because 256087701 - 2² = 256087697 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256087703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 414745 + ... + 415361.

It is an arithmetic number, because the mean of its divisors is an integer number (15618096).

Almost surely, 2^256087701 is an apocalyptic number.

It is an amenable number.

256087701 is a deficient number, since it is larger than the sum of its proper divisors (118746603).

256087701 is a wasteful number, since it uses less digits than its factorization.

256087701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 256087701 is about 16002.7404215653. The cubic root of 256087701 is about 635.0329211857.

The spelling of 256087701 in words is "two hundred fifty-six million, eighty-seven thousand, seven hundred one".