618668612 has 24 divisors (see below), whose sum is σ = 1121191680. Its totient is φ = 298392480.

The previous prime is 618668599. The next prime is 618668623. The reversal of 618668612 is 216866816.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31439 + ... + 47177.

It is an arithmetic number, because the mean of its divisors is an integer number (46716320).

Almost surely, 2^618668612 is an apocalyptic number.

618668612 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

618668612 is a deficient number, since it is larger than the sum of its proper divisors (502523068).

618668612 is a wasteful number, since it uses less digits than its factorization.

618668612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16091 (or 16089 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 618668612 is about 24873.0499135108. The cubic root of 618668612 is about 852.0910968888.

The spelling of 618668612 in words is "six hundred eighteen million, six hundred sixty-eight thousand, six hundred twelve".