66677634 has 32 divisors (see below), whose sum is σ = 148584000. Its totient is φ = 22164192.

The previous prime is 66677629. The next prime is 66677651. The reversal of 66677634 is 43677666.

It is a self number, because there is not a number n which added to its sum of digits gives 66677634.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20577 + ... + 23595.

It is an arithmetic number, because the mean of its divisors is an integer number (4643250).

Almost surely, 2^66677634 is an apocalyptic number.

66677634 is an abundant number, since it is smaller than the sum of its proper divisors (81906366).

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

66677634 is a wasteful number, since it uses less digits than its factorization.

66677634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439 (or 3433 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 66677634 is about 8165.6373909206. The cubic root of 66677634 is about 405.5023669979.

The spelling of 66677634 in words is "sixty-six million, six hundred seventy-seven thousand, six hundred thirty-four".