164566745 has 12 divisors (see below), whose sum is σ = 229722084. Its totient is φ = 112845600.

The previous prime is 164566741. The next prime is 164566757. The reversal of 164566745 is 547665461.

It can be written as a sum of positive squares in 2 ways, for example, as 17405584 + 147161161 = 4172^2 + 12131^2 .

It is not a de Polignac number, because 164566745 - 2² = 164566741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164566696 and 164566705.

It is not an unprimeable number, because it can be changed into a prime (164566741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335606 + ... + 336095.

It is an arithmetic number, because the mean of its divisors is an integer number (19143507).

Almost surely, 2^164566745 is an apocalyptic number.

It is an amenable number.

164566745 is a deficient number, since it is larger than the sum of its proper divisors (65155339).

164566745 is an equidigital number, since it uses as much as digits as its factorization.

164566745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671720 (or 671713 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The square root of 164566745 is about 12828.3570655014. The cubic root of 164566745 is about 548.0001698279. Note that the first 3 decimals are identical.

The spelling of 164566745 in words is "one hundred sixty-four million, five hundred sixty-six thousand, seven hundred forty-five".