66872630 has 16 divisors (see below), whose sum is σ = 131313744. Its totient is φ = 24317280.

The previous prime is 66872629. The next prime is 66872639. The reversal of 66872630 is 3627866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66872639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303857 + ... + 304076.

It is an arithmetic number, because the mean of its divisors is an integer number (8207109).

Almost surely, 2^66872630 is an apocalyptic number.

66872630 is a deficient number, since it is larger than the sum of its proper divisors (64441114).

66872630 is a wasteful number, since it uses less digits than its factorization.

66872630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607951.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 66872630 is about 8177.5687095860. The cubic root of 66872630 is about 405.8972739530.

The spelling of 66872630 in words is "sixty-six million, eight hundred seventy-two thousand, six hundred thirty".