66876624 has 40 divisors (see below), whose sum is σ = 191961920. Its totient is φ = 22292064.

The previous prime is 66876611. The next prime is 66876643. The reversal of 66876624 is 42667866.

It is a self number, because there is not a number n which added to its sum of digits gives 66876624.

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, 76972 + ... + 77835.

It is an arithmetic number, because the mean of its divisors is an integer number (4799048).

Almost surely, 2^66876624 is an apocalyptic number.

It is an amenable number.

66876624 is an abundant number, since it is smaller than the sum of its proper divisors (125085296).

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

66876624 is a wasteful number, since it uses less digits than its factorization.

66876624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154824 (or 154812 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 66876624 is about 8177.8129105526. The cubic root of 66876624 is about 405.9053545955.

The spelling of 66876624 in words is "sixty-six million, eight hundred seventy-six thousand, six hundred twenty-four".