66831952 has 20 divisors (see below), whose sum is σ = 141258816. Its totient is φ = 30378080.

The previous prime is 66831931. The next prime is 66831967. The reversal of 66831952 is 25913866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189688 + ... + 190039.

Almost surely, 2^66831952 is an apocalyptic number.

It is an amenable number.

66831952 is an abundant number, since it is smaller than the sum of its proper divisors (74426864).

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

66831952 is a wasteful number, since it uses less digits than its factorization.

66831952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379746 (or 379740 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 66831952 is about 8175.0811616766. The cubic root of 66831952 is about 405.8149560785.

The spelling of 66831952 in words is "sixty-six million, eight hundred thirty-one thousand, nine hundred fifty-two".