164664415 has 8 divisors (see below), whose sum is σ = 202192848. Its totient is φ = 128667840.

The previous prime is 164664389. The next prime is 164664433. The reversal of 164664415 is 514466461.

164664415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164664415 - 2⁹ = 164663903 is a prime.

It is a super-2 number, since 2×164664415² = 54228739134584450, which contains 22 as substring.

It is a Duffinian 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, 382726 + ... + 383155.

It is an arithmetic number, because the mean of its divisors is an integer number (25274106).

Almost surely, 2^164664415 is an apocalyptic number.

164664415 is a deficient number, since it is larger than the sum of its proper divisors (37528433).

164664415 is an equidigital number, since it uses as much as digits as its factorization.

164664415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765929.

The product of its digits is 69120, while the sum is 37.

The square root of 164664415 is about 12832.1633016417. The cubic root of 164664415 is about 548.1085606846.

The spelling of 164664415 in words is "one hundred sixty-four million, six hundred sixty-four thousand, four hundred fifteen".