609972164 has 6 divisors (see below), whose sum is σ = 1067451294. Its totient is φ = 304986080.

The previous prime is 609972137. The next prime is 609972173. The reversal of 609972164 is 461279906.

It can be written as a sum of positive squares in only one way, i.e., 389746564 + 220225600 = 19742^2 + 14840^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76246517 + ... + 76246524.

It is an arithmetic number, because the mean of its divisors is an integer number (177908549).

Almost surely, 2^609972164 is an apocalyptic number.

It is an amenable number.

609972164 is a deficient number, since it is larger than the sum of its proper divisors (457479130).

609972164 is a wasteful number, since it uses less digits than its factorization.

609972164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152493045 (or 152493043 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 609972164 is about 24697.6145406798. The cubic root of 609972164 is about 848.0797083762.

The spelling of 609972164 in words is "six hundred nine million, nine hundred seventy-two thousand, one hundred sixty-four".