66679662 has 16 divisors (see below), whose sum is σ = 152410752. Its totient is φ = 19051320.

The previous prime is 66679651. The next prime is 66679693. The reversal of 66679662 is 26697666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793764 + ... + 793847.

It is an arithmetic number, because the mean of its divisors is an integer number (9525672).

Almost surely, 2^66679662 is an apocalyptic number.

66679662 is an abundant number, since it is smaller than the sum of its proper divisors (85731090).

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

66679662 is a wasteful number, since it uses less digits than its factorization.

66679662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587623.

The product of its digits is 979776, while the sum is 48.

The square root of 66679662 is about 8165.7615688924. The cubic root of 66679662 is about 405.5064780739.

The spelling of 66679662 in words is "sixty-six million, six hundred seventy-nine thousand, six hundred sixty-two".