164978674 has 16 divisors (see below), whose sum is σ = 284697216. Its totient is φ = 70236000.

The previous prime is 164978669. The next prime is 164978713. The reversal of 164978674 is 476879461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36907 + ... + 41134.

It is an arithmetic number, because the mean of its divisors is an integer number (17793576).

Almost surely, 2^164978674 is an apocalyptic number.

164978674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

164978674 is a deficient number, since it is larger than the sum of its proper divisors (119718542).

164978674 is a wasteful number, since it uses less digits than its factorization.

164978674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78201.

The product of its digits is 2032128, while the sum is 52.

The square root of 164978674 is about 12844.4024384165. The cubic root of 164978674 is about 548.4570241273.

The spelling of 164978674 in words is "one hundred sixty-four million, nine hundred seventy-eight thousand, six hundred seventy-four".