164473657 has 12 divisors (see below), whose sum is σ = 175422256. Its totient is φ = 154175040.

The previous prime is 164473649. The next prime is 164473663. The reversal of 164473657 is 756374461.

It is not a de Polignac number, because 164473657 - 2³ = 164473649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164473607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80782 + ... + 82792.

Almost surely, 2^164473657 is an apocalyptic number.

164473657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

164473657 is a deficient number, since it is larger than the sum of its proper divisors (10948599).

164473657 is a wasteful number, since it uses less digits than its factorization.

164473657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2311 counting only the distinct ones).

The product of its digits is 423360, while the sum is 43.

The square root of 164473657 is about 12824.7283402028. The cubic root of 164473657 is about 547.8968239964.

The spelling of 164473657 in words is "one hundred sixty-four million, four hundred seventy-three thousand, six hundred fifty-seven".