612886680 has 96 divisors (see below), whose sum is σ = 2276445600. Its totient is φ = 140087808.

The previous prime is 612886657. The next prime is 612886693. The reversal of 612886680 is 86688216.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119085 + ... + 124124.

It is an arithmetic number, because the mean of its divisors is an integer number (23712975).

Almost surely, 2^612886680 is an apocalyptic number.

612886680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612886680 is an abundant number, since it is smaller than the sum of its proper divisors (1663558920).

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

612886680 is a wasteful number, since it uses less digits than its factorization.

612886680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243233 (or 243226 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 612886680 is about 24756.5482246617. The cubic root of 612886680 is about 849.4283029995.

The spelling of 612886680 in words is "six hundred twelve million, eight hundred eighty-six thousand, six hundred eighty".