254664657 has 48 divisors (see below), whose sum is σ = 421220800. Its totient is φ = 146966400.

The previous prime is 254664643. The next prime is 254664677. The reversal of 254664657 is 756466452.

It is not a de Polignac number, because 254664657 - 2¹¹ = 254662609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254664677) 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 47 ways as a sum of consecutive naturals, for example, 241782 + ... + 242832.

Almost surely, 2^254664657 is an apocalyptic number.

It is an amenable number.

254664657 is a deficient number, since it is larger than the sum of its proper divisors (166556143).

254664657 is a wasteful number, since it uses less digits than its factorization.

254664657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1195 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The square root of 254664657 is about 15958.2159717181. The cubic root of 254664657 is about 633.8544722324.

The spelling of 254664657 in words is "two hundred fifty-four million, six hundred sixty-four thousand, six hundred fifty-seven".