164516646 has 16 divisors (see below), whose sum is σ = 376038144. Its totient is φ = 47004744.

The previous prime is 164516629. The next prime is 164516657. The reversal of 164516646 is 646615461.

It is a happy number.

164516646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164516646² = 54131453622178632, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 1958490 + ... + 1958573.

It is an arithmetic number, because the mean of its divisors is an integer number (23502384).

Almost surely, 2^164516646 is an apocalyptic number.

164516646 is an abundant number, since it is smaller than the sum of its proper divisors (211521498).

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

164516646 is a wasteful number, since it uses less digits than its factorization.

164516646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917075.

The product of its digits is 103680, while the sum is 39.

The square root of 164516646 is about 12826.4042506074. The cubic root of 164516646 is about 547.9445550134.

The spelling of 164516646 in words is "one hundred sixty-four million, five hundred sixteen thousand, six hundred forty-six".