664162051 has 8 divisors (see below), whose sum is σ = 763431264. Its totient is φ = 565990080.

The previous prime is 664162039. The next prime is 664162061. The reversal of 664162051 is 150261466.

664162051 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 a cyclic number.

It is not a de Polignac number, because 664162051 - 2²⁷ = 529944323 is a prime.

It is a super-2 number, since 2×664162051² = 882222459977053202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664162021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273010 + ... + 275431.

It is an arithmetic number, because the mean of its divisors is an integer number (95428908).

Almost surely, 2^664162051 is an apocalyptic number.

664162051 is a deficient number, since it is larger than the sum of its proper divisors (99269213).

664162051 is a wasteful number, since it uses less digits than its factorization.

664162051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548621.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 664162051 is about 25771.3416608449. The cubic root of 664162051 is about 872.4851001963.

The spelling of 664162051 in words is "six hundred sixty-four million, one hundred sixty-two thousand, fifty-one".