612399904 has 24 divisors (see below), whose sum is σ = 1206597168. Its totient is φ = 305962560.

The previous prime is 612399889. The next prime is 612399943. The reversal of 612399904 is 409993216.

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, 38959 + ... + 52369.

It is an arithmetic number, because the mean of its divisors is an integer number (50274882).

Almost surely, 2^612399904 is an apocalyptic number.

It is an amenable number.

612399904 is a deficient number, since it is larger than the sum of its proper divisors (594197264).

612399904 is a wasteful number, since it uses less digits than its factorization.

612399904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14848 (or 14840 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 612399904 is about 24746.7150143206. The cubic root of 612399904 is about 849.2033615649.

The spelling of 612399904 in words is "six hundred twelve million, three hundred ninety-nine thousand, nine hundred four".