612689772 has 12 divisors (see below), whose sum is σ = 1429609496. Its totient is φ = 204229920.

The previous prime is 612689761. The next prime is 612689813. The reversal of 612689772 is 277986216.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25528729 + ... + 25528752.

Almost surely, 2^612689772 is an apocalyptic number.

It is an amenable number.

612689772 is an abundant number, since it is smaller than the sum of its proper divisors (816919724).

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

612689772 is a wasteful number, since it uses less digits than its factorization.

612689772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51057488 (or 51057486 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 612689772 is about 24752.5710179771. The cubic root of 612689772 is about 849.3373252547.

The spelling of 612689772 in words is "six hundred twelve million, six hundred eighty-nine thousand, seven hundred seventy-two".