164687707657 has 8 divisors (see below), whose sum is σ = 180358384032. Its totient is φ = 149133542400.

The previous prime is 164687707631. The next prime is 164687707673. The reversal of 164687707657 is 756707786461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164687707657 - 2⁷ = 164687707529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164687707157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29124819 + ... + 29130472.

It is an arithmetic number, because the mean of its divisors is an integer number (22544798004).

Almost surely, 2^164687707657 is an apocalyptic number.

It is an amenable number.

164687707657 is a deficient number, since it is larger than the sum of its proper divisors (15670676375).

164687707657 is a wasteful number, since it uses less digits than its factorization.

164687707657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58255559.

The product of its (nonzero) digits is 82978560, while the sum is 64.

The spelling of 164687707657 in words is "one hundred sixty-four billion, six hundred eighty-seven million, seven hundred seven thousand, six hundred fifty-seven".