609772664 has 24 divisors (see below), whose sum is σ = 1171915680. Its totient is φ = 297443520.

The previous prime is 609772661. The next prime is 609772679. The reversal of 609772664 is 466277906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609772661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9224 + ... + 36119.

It is an arithmetic number, because the mean of its divisors is an integer number (48829820).

Almost surely, 2^609772664 is an apocalyptic number.

It is an amenable number.

609772664 is a deficient number, since it is larger than the sum of its proper divisors (562143016).

609772664 is a wasteful number, since it uses less digits than its factorization.

609772664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45431 (or 45386 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 47.

The square root of 609772664 is about 24693.5753587851. The cubic root of 609772664 is about 847.9872394840.

The spelling of 609772664 in words is "six hundred nine million, seven hundred seventy-two thousand, six hundred sixty-four".