256606627 has 2 divisors, whose sum is σ = 256606628. Its totient is φ = 256606626.

The previous prime is 256606591. The next prime is 256606633. The reversal of 256606627 is 726606652.

It is a happy number.

256606627 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256606627 is a prime.

It is a super-2 number, since 2×256606627² = 131693922040634258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256606627.

It is not a weakly prime, because it can be changed into another prime (256606667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128303313 + 128303314.

It is an arithmetic number, because the mean of its divisors is an integer number (128303314).

Almost surely, 2^256606627 is an apocalyptic number.

256606627 is a deficient number, since it is larger than the sum of its proper divisors (1).

256606627 is an equidigital number, since it uses as much as digits as its factorization.

256606627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 256606627 is about 16018.9458766799. The cubic root of 256606627 is about 635.4615669933.

The spelling of 256606627 in words is "two hundred fifty-six million, six hundred six thousand, six hundred twenty-seven".