612768668 has 48 divisors (see below), whose sum is σ = 1147051584. Its totient is φ = 285795840.

The previous prime is 612768659. The next prime is 612768701. The reversal of 612768668 is 866867216.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 768446 + ... + 769242.

It is an arithmetic number, because the mean of its divisors is an integer number (23896908).

Almost surely, 2^612768668 is an apocalyptic number.

It is an amenable number.

612768668 is a deficient number, since it is larger than the sum of its proper divisors (534282916).

612768668 is a wasteful number, since it uses less digits than its factorization.

612768668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022 (or 1020 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 612768668 is about 24754.1646597093. The cubic root of 612768668 is about 849.3737800505.

The spelling of 612768668 in words is "six hundred twelve million, seven hundred sixty-eight thousand, six hundred sixty-eight".