164950657 has 4 divisors (see below), whose sum is σ = 167038720. Its totient is φ = 162862596.

The previous prime is 164950627. The next prime is 164950693. The reversal of 164950657 is 756059461.

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, and also an emirpimes, since its reverse is a distinct semiprime: 756059461 = 1987 ⋅380503.

It is a cyclic number.

It is not a de Polignac number, because 164950657 - 2⁷ = 164950529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164950627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043913 + ... + 1044070.

It is an arithmetic number, because the mean of its divisors is an integer number (41759680).

Almost surely, 2^164950657 is an apocalyptic number.

It is an amenable number.

164950657 is a deficient number, since it is larger than the sum of its proper divisors (2088063).

164950657 is an equidigital number, since it uses as much as digits as its factorization.

164950657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088062.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 164950657 is about 12843.3117613799. The cubic root of 164950657 is about 548.4259756893.

The spelling of 164950657 in words is "one hundred sixty-four million, nine hundred fifty thousand, six hundred fifty-seven".