257070768 has 40 divisors (see below), whose sum is σ = 664737216. Its totient is φ = 85608000.

The previous prime is 257070767. The next prime is 257070769. The reversal of 257070768 is 867070752.

257070768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (257070767) and next prime (257070769).

It is not an unprimeable number, because it can be changed into a prime (257070763) 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, 67803 + ... + 71493.

Almost surely, 2^257070768 is an apocalyptic number.

It is an amenable number.

257070768 is an abundant number, since it is smaller than the sum of its proper divisors (407666448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257070768 is a wasteful number, since it uses less digits than its factorization.

257070768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153 (or 5147 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 257070768 is about 16033.4265832354. The cubic root of 257070768 is about 635.8444697021.

The spelling of 257070768 in words is "two hundred fifty-seven million, seventy thousand, seven hundred sixty-eight".