256020727 has 2 divisors, whose sum is σ = 256020728. Its totient is φ = 256020726.

The previous prime is 256020701. The next prime is 256020749. The reversal of 256020727 is 727020652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256020727 is a prime.

It is a super-2 number, since 2×256020727² = 131093225307217058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256020757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128010363 + 128010364.

It is an arithmetic number, because the mean of its divisors is an integer number (128010364).

Almost surely, 2^256020727 is an apocalyptic number.

256020727 is a deficient number, since it is larger than the sum of its proper divisors (1).

256020727 is an equidigital number, since it uses as much as digits as its factorization.

256020727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 256020727 is about 16000.6477056399. The cubic root of 256020727 is about 634.9775568152.

The spelling of 256020727 in words is "two hundred fifty-six million, twenty thousand, seven hundred twenty-seven".