164705377 has 4 divisors (see below), whose sum is σ = 164972080. Its totient is φ = 164438676.

The previous prime is 164705341. The next prime is 164705381. The reversal of 164705377 is 773507461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164705377 - 2²⁷ = 30487649 is a prime.

It is a super-2 number, since 2×164705377² = 54255722425424258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164705477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132423 + ... + 133660.

It is an arithmetic number, because the mean of its divisors is an integer number (41243020).

Almost surely, 2^164705377 is an apocalyptic number.

It is an amenable number.

164705377 is a deficient number, since it is larger than the sum of its proper divisors (266703).

164705377 is an equidigital number, since it uses as much as digits as its factorization.

164705377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266702.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 164705377 is about 12833.7592699879. The cubic root of 164705377 is about 548.1540061672.

The spelling of 164705377 in words is "one hundred sixty-four million, seven hundred five thousand, three hundred seventy-seven".