16457664 has 28 divisors (see below), whose sum is σ = 43544744. Its totient is φ = 5485824.

The previous prime is 16457611. The next prime is 16457669. The reversal of 16457664 is 46675461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16457669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42667 + ... + 43050.

Almost surely, 2^16457664 is an apocalyptic number.

It is an amenable number.

16457664 is an abundant number, since it is smaller than the sum of its proper divisors (27087080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16457664 is an equidigital number, since it uses as much as digits as its factorization.

16457664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85732 (or 85722 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 16457664 is about 4056.8046539117. The cubic root of 16457664 is about 254.3642448068.

The spelling of 16457664 in words is "sixteen million, four hundred fifty-seven thousand, six hundred sixty-four".