164677845 has 16 divisors (see below), whose sum is σ = 277352640. Its totient is φ = 83205504.

The previous prime is 164677817. The next prime is 164677847. The reversal of 164677845 is 548776461.

It is not a de Polignac number, because 164677845 - 2⁵ = 164677813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164677794 and 164677803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164677847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288624 + ... + 289193.

It is an arithmetic number, because the mean of its divisors is an integer number (17334540).

Almost surely, 2^164677845 is an apocalyptic number.

164677845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164677845 is a deficient number, since it is larger than the sum of its proper divisors (112674795).

164677845 is a wasteful number, since it uses less digits than its factorization.

164677845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577844.

The product of its digits is 1128960, while the sum is 48.

The square root of 164677845 is about 12832.6865854349. The cubic root of 164677845 is about 548.1234614913.

The spelling of 164677845 in words is "one hundred sixty-four million, six hundred seventy-seven thousand, eight hundred forty-five".