66752868 has 48 divisors (see below), whose sum is σ = 191703680. Its totient is φ = 17604864.

The previous prime is 66752843. The next prime is 66752887. The reversal of 66752868 is 86825766.

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, 29473 + ... + 31656.

Almost surely, 2^66752868 is an apocalyptic number.

It is an amenable number.

66752868 is an abundant number, since it is smaller than the sum of its proper divisors (124950812).

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

66752868 is a wasteful number, since it uses less digits than its factorization.

66752868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61156 (or 61154 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 66752868 is about 8170.2428360484. The cubic root of 66752868 is about 405.6548224081.

It can be divided in two parts, 667 and 52868, that added together give a palindrome (53535).

The spelling of 66752868 in words is "sixty-six million, seven hundred fifty-two thousand, eight hundred sixty-eight".