668361006 has 12 divisors (see below), whose sum is σ = 1448115552. Its totient is φ = 222786996.

The previous prime is 668360993. The next prime is 668361017. The reversal of 668361006 is 600163866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18565566 + ... + 18565601.

It is an arithmetic number, because the mean of its divisors is an integer number (120676296).

Almost surely, 2^668361006 is an apocalyptic number.

668361006 is an abundant number, since it is smaller than the sum of its proper divisors (779754546).

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

668361006 is a wasteful number, since it uses less digits than its factorization.

668361006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37131175 (or 37131172 counting only the distinct ones).

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

The square root of 668361006 is about 25852.6788940721. The cubic root of 668361006 is about 874.3199095256.

The spelling of 668361006 in words is "six hundred sixty-eight million, three hundred sixty-one thousand, six".