249712664 has 16 divisors (see below), whose sum is σ = 470640120. Its totient is φ = 124208640.

The previous prime is 249712663. The next prime is 249712681. The reversal of 249712664 is 466217942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249712663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79322 + ... + 82409.

Almost surely, 2^249712664 is an apocalyptic number.

It is an amenable number.

249712664 is a deficient number, since it is larger than the sum of its proper divisors (220927456).

249712664 is a wasteful number, since it uses less digits than its factorization.

249712664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161930 (or 161926 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 249712664 is about 15802.2993263639. The cubic root of 249712664 is about 629.7190853082.

The spelling of 249712664 in words is "two hundred forty-nine million, seven hundred twelve thousand, six hundred sixty-four".