668002932 has 36 divisors (see below), whose sum is σ = 1712352096. Its totient is φ = 219530640.

The previous prime is 668002891. The next prime is 668002943. The reversal of 668002932 is 239200866.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 128118 + ... + 133229.

It is an arithmetic number, because the mean of its divisors is an integer number (47565336).

Almost surely, 2^668002932 is an apocalyptic number.

It is an amenable number.

668002932 is an abundant number, since it is smaller than the sum of its proper divisors (1044349164).

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

668002932 is a wasteful number, since it uses less digits than its factorization.

668002932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261428 (or 261423 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 668002932 is about 25845.7526878209. The cubic root of 668002932 is about 874.1637428480.

The spelling of 668002932 in words is "six hundred sixty-eight million, two thousand, nine hundred thirty-two".