66670732 has 12 divisors (see below), whose sum is σ = 117022360. Its totient is φ = 33235776.

The previous prime is 66670729. The next prime is 66670759. The reversal of 66670732 is 23707666.

It is a happy number.

66670732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66670691 and 66670700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23382 + ... + 26077.

Almost surely, 2^66670732 is an apocalyptic number.

It is an amenable number.

66670732 is a deficient number, since it is larger than the sum of its proper divisors (50351628).

66670732 is a wasteful number, since it uses less digits than its factorization.

66670732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49800 (or 49798 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 66670732 is about 8165.2147552897. The cubic root of 66670732 is about 405.4883749302.

The spelling of 66670732 in words is "sixty-six million, six hundred seventy thousand, seven hundred thirty-two".