165064664 has 8 divisors (see below), whose sum is σ = 309496260. Its totient is φ = 82532328.

The previous prime is 165064661. The next prime is 165064681. The reversal of 165064664 is 466460561.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165064661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10316534 + ... + 10316549.

Almost surely, 2^165064664 is an apocalyptic number.

It is an amenable number.

165064664 is a deficient number, since it is larger than the sum of its proper divisors (144431596).

165064664 is a wasteful number, since it uses less digits than its factorization.

165064664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20633089 (or 20633085 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 165064664 is about 12847.7493748905. The cubic root of 165064664 is about 548.5522962956.

The spelling of 165064664 in words is "one hundred sixty-five million, sixty-four thousand, six hundred sixty-four".