164511657 has 12 divisors (see below), whose sum is σ = 244050820. Its totient is φ = 106710048.

The previous prime is 164511653. The next prime is 164511673. The reversal of 164511657 is 756115461.

It is a happy number.

164511657 is a `hidden beast` number, since 1 + 645 + 1 + 1 + 6 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 157025961 + 7485696 = 12531^2 + 2736^2 .

It is not a de Polignac number, because 164511657 - 2² = 164511653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164511653) 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 in 11 ways as a sum of consecutive naturals, for example, 246682 + ... + 247347.

Almost surely, 2^164511657 is an apocalyptic number.

It is an amenable number.

164511657 is a deficient number, since it is larger than the sum of its proper divisors (79539163).

164511657 is a wasteful number, since it uses less digits than its factorization.

164511657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494072 (or 494069 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 164511657 is about 12826.2097675034. The cubic root of 164511657 is about 547.9390161149.

The spelling of 164511657 in words is "one hundred sixty-four million, five hundred eleven thousand, six hundred fifty-seven".