668873484 has 48 divisors (see below), whose sum is σ = 1790064640. Its totient is φ = 215764560.

The previous prime is 668873423. The next prime is 668873519. The reversal of 668873484 is 484378866.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 668873484.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96544 + ... + 103239.

Almost surely, 2^668873484 is an apocalyptic number.

It is an amenable number.

668873484 is an abundant number, since it is smaller than the sum of its proper divisors (1121191156).

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

668873484 is a wasteful number, since it uses less digits than its factorization.

668873484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199827 (or 199819 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 54.

The square root of 668873484 is about 25862.5885015402. The cubic root of 668873484 is about 874.5433193502.

The spelling of 668873484 in words is "six hundred sixty-eight million, eight hundred seventy-three thousand, four hundred eighty-four".