163672657 has 8 divisors (see below), whose sum is σ = 166271616. Its totient is φ = 161093712.

The previous prime is 163672637. The next prime is 163672673. The reversal of 163672657 is 756276361.

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 163672657 - 2²³ = 155284049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163672627) 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, 11928 + ... + 21670.

It is an arithmetic number, because the mean of its divisors is an integer number (20783952).

Almost surely, 2^163672657 is an apocalyptic number.

It is an amenable number.

163672657 is a deficient number, since it is larger than the sum of its proper divisors (2598959).

163672657 is a wasteful number, since it uses less digits than its factorization.

163672657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10007.

The product of its digits is 317520, while the sum is 43.

The square root of 163672657 is about 12793.4614940602. The cubic root of 163672657 is about 547.0059422701.

The spelling of 163672657 in words is "one hundred sixty-three million, six hundred seventy-two thousand, six hundred fifty-seven".