256797369 has 24 divisors (see below), whose sum is σ = 407434560. Its totient is φ = 155133792.

The previous prime is 256797337. The next prime is 256797371. The reversal of 256797369 is 963797652.

256797369 is a `hidden beast` number, since 2 + 567 + 9 + 73 + 6 + 9 = 666.

It is not a de Polignac number, because 256797369 - 2⁵ = 256797337 is a prime.

It is a super-2 number, since 2×256797369² = 131889777450644322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256797389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28714 + ... + 36579.

It is an arithmetic number, because the mean of its divisors is an integer number (16976440).

Almost surely, 2^256797369 is an apocalyptic number.

It is an amenable number.

256797369 is a deficient number, since it is larger than the sum of its proper divisors (150637191).

256797369 is a wasteful number, since it uses less digits than its factorization.

256797369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65341 (or 65338 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 54.

The square root of 256797369 is about 16024.8984084143. The cubic root of 256797369 is about 635.6189793868.

The spelling of 256797369 in words is "two hundred fifty-six million, seven hundred ninety-seven thousand, three hundred sixty-nine".