256763127 has 4 divisors (see below), whose sum is σ = 342350840. Its totient is φ = 171175416.

The previous prime is 256763123. The next prime is 256763141. The reversal of 256763127 is 721367652.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 256763127 - 2² = 256763123 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 (256763123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42793852 + ... + 42793857.

It is an arithmetic number, because the mean of its divisors is an integer number (85587710).

Almost surely, 2^256763127 is an apocalyptic number.

256763127 is a deficient number, since it is larger than the sum of its proper divisors (85587713).

256763127 is an equidigital number, since it uses as much as digits as its factorization.

256763127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85587712.

The product of its digits is 105840, while the sum is 39.

The square root of 256763127 is about 16023.8299728873. The cubic root of 256763127 is about 635.5907264590.

The spelling of 256763127 in words is "two hundred fifty-six million, seven hundred sixty-three thousand, one hundred twenty-seven".