612805568 has 28 divisors (see below), whose sum is σ = 1221421992. Its totient is φ = 305045760.

The previous prime is 612805549. The next prime is 612805591. The reversal of 612805568 is 865508216.

It is a congruent number.

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, 6563 + ... + 35618.

It is an arithmetic number, because the mean of its divisors is an integer number (43622214).

Almost surely, 2^612805568 is an apocalyptic number.

It is an amenable number.

612805568 is a deficient number, since it is larger than the sum of its proper divisors (608616424).

612805568 is a wasteful number, since it uses less digits than its factorization.

612805568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42420 (or 42410 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 612805568 is about 24754.9099776186. The cubic root of 612805568 is about 849.3908290420.

The spelling of 612805568 in words is "six hundred twelve million, eight hundred five thousand, five hundred sixty-eight".