256363897 has 8 divisors (see below), whose sum is σ = 262972800. Its totient is φ = 249803184.

The previous prime is 256363879. The next prime is 256363901. The reversal of 256363897 is 798363652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256363897 - 2¹¹ = 256361849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256363897.

It is not an unprimeable number, because it can be changed into a prime (256363847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1147 + ... + 22672.

It is an arithmetic number, because the mean of its divisors is an integer number (32871600).

Almost surely, 2^256363897 is an apocalyptic number.

It is an amenable number.

256363897 is a deficient number, since it is larger than the sum of its proper divisors (6608903).

256363897 is a wasteful number, since it uses less digits than its factorization.

256363897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24095.

The product of its digits is 1632960, while the sum is 49.

The square root of 256363897 is about 16011.3677429506. The cubic root of 256363897 is about 635.2611379705.

The spelling of 256363897 in words is "two hundred fifty-six million, three hundred sixty-three thousand, eight hundred ninety-seven".