668673486 has 24 divisors (see below), whose sum is σ = 1560238680. Its totient is φ = 205745616.

The previous prime is 668673463. The next prime is 668673497. The reversal of 668673486 is 684376866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1428556 + ... + 1429023.

It is an arithmetic number, because the mean of its divisors is an integer number (65009945).

Almost surely, 2^668673486 is an apocalyptic number.

668673486 is an abundant number, since it is smaller than the sum of its proper divisors (891565194).

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

668673486 is a wasteful number, since it uses less digits than its factorization.

668673486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857600 (or 2857597 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The square root of 668673486 is about 25858.7216621394. The cubic root of 668673486 is about 874.4561457393.

The spelling of 668673486 in words is "six hundred sixty-eight million, six hundred seventy-three thousand, four hundred eighty-six".