256626071 has 16 divisors (see below), whose sum is σ = 281685600. Its totient is φ = 232370688.

The previous prime is 256626047. The next prime is 256626089. The reversal of 256626071 is 170626652.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256626071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256626871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157700 + ... + 159318.

It is an arithmetic number, because the mean of its divisors is an integer number (17605350).

Almost surely, 2^256626071 is an apocalyptic number.

256626071 is a deficient number, since it is larger than the sum of its proper divisors (25059529).

256626071 is a wasteful number, since it uses less digits than its factorization.

256626071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 256626071 is about 16019.5527715352. The cubic root of 256626071 is about 635.4776169850.

The spelling of 256626071 in words is "two hundred fifty-six million, six hundred twenty-six thousand, seventy-one".