66670332 has 12 divisors (see below), whose sum is σ = 155564136. Its totient is φ = 22223440.

The previous prime is 66670327. The next prime is 66670421. The reversal of 66670332 is 23307666.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 66670293 and 66670302.

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, 2777919 + ... + 2777942.

It is an arithmetic number, because the mean of its divisors is an integer number (12963678).

Almost surely, 2^66670332 is an apocalyptic number.

It is an amenable number.

66670332 is an abundant number, since it is smaller than the sum of its proper divisors (88893804).

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

66670332 is a wasteful number, since it uses less digits than its factorization.

66670332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555868 (or 5555866 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 33.

The square root of 66670332 is about 8165.1902611023. The cubic root of 66670332 is about 405.4875640013.

Adding to 66670332 its reverse (23307666), we get a palindrome (89977998).

The spelling of 66670332 in words is "sixty-six million, six hundred seventy thousand, three hundred thirty-two".