66768832 has 28 divisors (see below), whose sum is σ = 142688056. Its totient is φ = 30816000.

The previous prime is 66768797. The next prime is 66768851. The reversal of 66768832 is 23886766.

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, 39294 + ... + 40957.

It is an arithmetic number, because the mean of its divisors is an integer number (5096002).

Almost surely, 2^66768832 is an apocalyptic number.

It is an amenable number.

66768832 is an abundant number, since it is smaller than the sum of its proper divisors (75919224).

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

66768832 is a wasteful number, since it uses less digits than its factorization.

66768832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80276 (or 80266 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 66768832 is about 8171.2197375912. The cubic root of 66768832 is about 405.6871573854.

It can be divided in two parts, 66768 and 832, that added together give a square (67600 = 260²).

The spelling of 66768832 in words is "sixty-six million, seven hundred sixty-eight thousand, eight hundred thirty-two".