609786864 has 60 divisors (see below), whose sum is σ = 1761619392. Its totient is φ = 196704000.

The previous prime is 609786851. The next prime is 609786907. The reversal of 609786864 is 468687906.

It is a self number, because there is not a number n which added to its sum of digits gives 609786864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63837 + ... + 72764.

Almost surely, 2^609786864 is an apocalyptic number.

It is an amenable number.

609786864 is an abundant number, since it is smaller than the sum of its proper divisors (1151832528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

609786864 is a wasteful number, since it uses less digits than its factorization.

609786864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136646 (or 136637 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 609786864 is about 24693.8628812910. The cubic root of 609786864 is about 847.9938218964.

The spelling of 609786864 in words is "six hundred nine million, seven hundred eighty-six thousand, eight hundred sixty-four".