66938332 has 12 divisors (see below), whose sum is σ = 119127960. Its totient is φ = 32901776.

The previous prime is 66938329. The next prime is 66938341. The reversal of 66938332 is 23383966.

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, 141583 + ... + 142054.

It is an arithmetic number, because the mean of its divisors is an integer number (9927330).

Almost surely, 2^66938332 is an apocalyptic number.

It is an amenable number.

66938332 is a deficient number, since it is larger than the sum of its proper divisors (52189628).

66938332 is a wasteful number, since it uses less digits than its factorization.

66938332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283700 (or 283698 counting only the distinct ones).

The product of its digits is 139968, while the sum is 40.

The square root of 66938332 is about 8181.5849320288. The cubic root of 66938332 is about 406.0301610732.

The spelling of 66938332 in words is "sixty-six million, nine hundred thirty-eight thousand, three hundred thirty-two".