256064807 has 2 divisors, whose sum is σ = 256064808. Its totient is φ = 256064806.

The previous prime is 256064797. The next prime is 256064813. The reversal of 256064807 is 708460652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256064807 - 2⁸ = 256064551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256066807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128032403 + 128032404.

It is an arithmetic number, because the mean of its divisors is an integer number (128032404).

Almost surely, 2^256064807 is an apocalyptic number.

256064807 is a deficient number, since it is larger than the sum of its proper divisors (1).

256064807 is an equidigital number, since it uses as much as digits as its factorization.

256064807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 256064807 is about 16002.0250905940. The cubic root of 256064807 is about 635.0139968395.

The spelling of 256064807 in words is "two hundred fifty-six million, sixty-four thousand, eight hundred seven".