164571745 has 32 divisors (see below), whose sum is σ = 223886880. Its totient is φ = 115292160.

The previous prime is 164571727. The next prime is 164571761. The reversal of 164571745 is 547175461.

164571745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 67765824 + 96805921 = 8232^2 + 9839^2 .

It is not a de Polignac number, because 164571745 - 2²⁷ = 30354017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 164571698 and 164571707.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97771 + ... + 99439.

It is an arithmetic number, because the mean of its divisors is an integer number (6996465).

Almost surely, 2^164571745 is an apocalyptic number.

It is an amenable number.

164571745 is a deficient number, since it is larger than the sum of its proper divisors (59315135).

164571745 is a wasteful number, since it uses less digits than its factorization.

164571745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765.

The product of its digits is 117600, while the sum is 40.

The square root of 164571745 is about 12828.5519447832. The cubic root of 164571745 is about 548.0057196998.

The spelling of 164571745 in words is "one hundred sixty-four million, five hundred seventy-one thousand, seven hundred forty-five".