618446668 has 24 divisors (see below), whose sum is σ = 1237565952. Its totient is φ = 264904464.

The previous prime is 618446659. The next prime is 618446687. The reversal of 618446668 is 866644816.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58605 + ... + 68347.

It is an arithmetic number, because the mean of its divisors is an integer number (51565248).

Almost surely, 2^618446668 is an apocalyptic number.

It is an amenable number.

618446668 is an abundant number, since it is smaller than the sum of its proper divisors (619119284).

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

618446668 is a wasteful number, since it uses less digits than its factorization.

618446668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12021 (or 12019 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 49.

The square root of 618446668 is about 24868.5879776074. The cubic root of 618446668 is about 851.9891903527.

The spelling of 618446668 in words is "six hundred eighteen million, four hundred forty-six thousand, six hundred sixty-eight".