164523645 has 96 divisors (see below), whose sum is σ = 344582784. Its totient is φ = 71539200.

The previous prime is 164523631. The next prime is 164523661. The reversal of 164523645 is 546325461.

164523645 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 2 + 3 + 645 = 666.

It is not a de Polignac number, because 164523645 - 2⁴ = 164523629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 237750 + ... + 238440.

It is an arithmetic number, because the mean of its divisors is an integer number (3589404).

Almost surely, 2^164523645 is an apocalyptic number.

164523645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164523645 is an abundant number, since it is smaller than the sum of its proper divisors (180059139).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164523645 is a wasteful number, since it uses less digits than its factorization.

164523645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 760 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 164523645 is about 12826.6770833291. The cubic root of 164523645 is about 547.9523252698.

The spelling of 164523645 in words is "one hundred sixty-four million, five hundred twenty-three thousand, six hundred forty-five".