16464664 has 16 divisors (see below), whose sum is σ = 31528800. Its totient is φ = 8056992.

The previous prime is 16464641. The next prime is 16464673. The reversal of 16464664 is 46646461.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21519 + ... + 22270.

It is an arithmetic number, because the mean of its divisors is an integer number (1970550).

Almost surely, 2^16464664 is an apocalyptic number.

It is an amenable number.

16464664 is a deficient number, since it is larger than the sum of its proper divisors (15064136).

16464664 is a wasteful number, since it uses less digits than its factorization.

16464664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43842 (or 43838 counting only the distinct ones).

The product of its digits is 82944, while the sum is 37.

The square root of 16464664 is about 4057.6673101673. The cubic root of 16464664 is about 254.4003029281.

The spelling of 16464664 in words is "sixteen million, four hundred sixty-four thousand, six hundred sixty-four".