66870832 has 40 divisors (see below), whose sum is σ = 148490496. Its totient is φ = 28577856.

The previous prime is 66870829. The next prime is 66870841. The reversal of 66870832 is 23807866.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

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, 55743 + ... + 56929.

Almost surely, 2^66870832 is an apocalyptic number.

It is an amenable number.

66870832 is an abundant number, since it is smaller than the sum of its proper divisors (81619664).

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

66870832 is a wasteful number, since it uses less digits than its factorization.

66870832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705 (or 1699 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 66870832 is about 8177.4587739713. The cubic root of 66870832 is about 405.8936361427.

The spelling of 66870832 in words is "sixty-six million, eight hundred seventy thousand, eight hundred thirty-two".