164634977 has 8 divisors (see below), whose sum is σ = 177414720. Its totient is φ = 151871760.

The previous prime is 164634923. The next prime is 164634979. The reversal of 164634977 is 779436461.

It is a happy number.

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 164634977 - 2¹² = 164630881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164634979) 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, 23402 + ... + 29612.

It is an arithmetic number, because the mean of its divisors is an integer number (22176840).

Almost surely, 2^164634977 is an apocalyptic number.

It is an amenable number.

164634977 is a deficient number, since it is larger than the sum of its proper divisors (12779743).

164634977 is a wasteful number, since it uses less digits than its factorization.

164634977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8263.

The product of its digits is 762048, while the sum is 47.

The square root of 164634977 is about 12831.0162107294. The cubic root of 164634977 is about 548.0758959031.

The spelling of 164634977 in words is "one hundred sixty-four million, six hundred thirty-four thousand, nine hundred seventy-seven".