609639164 has 24 divisors (see below), whose sum is σ = 1089763920. Its totient is φ = 298336896.

The previous prime is 609639077. The next prime is 609639169. The reversal of 609639164 is 461936906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609639169) 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, 34832 + ... + 49320.

It is an arithmetic number, because the mean of its divisors is an integer number (45406830).

Almost surely, 2^609639164 is an apocalyptic number.

It is an amenable number.

609639164 is a deficient number, since it is larger than the sum of its proper divisors (480124756).

609639164 is a wasteful number, since it uses less digits than its factorization.

609639164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14717 (or 14715 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 609639164 is about 24690.8720785638. The cubic root of 609639164 is about 847.9253505399.

The spelling of 609639164 in words is "six hundred nine million, six hundred thirty-nine thousand, one hundred sixty-four".