16631464 has 8 divisors (see below), whose sum is σ = 31184010. Its totient is φ = 8315728.

The previous prime is 16631449. The next prime is 16631501. The reversal of 16631464 is 46413661.

It can be written as a sum of positive squares in only one way, i.e., 16564900 + 66564 = 4070^2 + 258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039459 + ... + 1039474.

Almost surely, 2^16631464 is an apocalyptic number.

It is an amenable number.

16631464 is a deficient number, since it is larger than the sum of its proper divisors (14552546).

16631464 is a wasteful number, since it uses less digits than its factorization.

16631464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078939 (or 2078935 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 16631464 is about 4078.1691970785. The cubic root of 16631464 is about 255.2565097947.

The spelling of 16631464 in words is "sixteen million, six hundred thirty-one thousand, four hundred sixty-four".