16664264 has 8 divisors (see below), whose sum is σ = 31245510. Its totient is φ = 8332128.

The previous prime is 16664261. The next prime is 16664317. The reversal of 16664264 is 46246661.

It can be written as a sum of positive squares in only one way, i.e., 8655364 + 8008900 = 2942^2 + 2830^2 .

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

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (16664261) by changing a digit.

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 as a sum of consecutive naturals, namely, 1041509 + ... + 1041524.

Almost surely, 2^16664264 is an apocalyptic number.

It is an amenable number.

16664264 is a deficient number, since it is larger than the sum of its proper divisors (14581246).

16664264 is a wasteful number, since it uses less digits than its factorization.

16664264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083039 (or 2083035 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 16664264 is about 4082.1886286648. The cubic root of 16664264 is about 255.4242023004.

The spelling of 16664264 in words is "sixteen million, six hundred sixty-four thousand, two hundred sixty-four".