16664634 has 48 divisors (see below), whose sum is σ = 43442880. Its totient is φ = 4510080.

The previous prime is 16664629. The next prime is 16664663. The reversal of 16664634 is 43646661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1087 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (905060).

Almost surely, 2^16664634 is an apocalyptic number.

16664634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16664634 is an abundant number, since it is smaller than the sum of its proper divisors (26778246).

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

16664634 is a wasteful number, since it uses less digits than its factorization.

16664634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6995 (or 6992 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 16664634 is about 4082.2339472402. The cubic root of 16664634 is about 255.4260926981.

The spelling of 16664634 in words is "sixteen million, six hundred sixty-four thousand, six hundred thirty-four".