66866332 has 12 divisors (see below), whose sum is σ = 126017416. Its totient is φ = 30861360.

The previous prime is 66866329. The next prime is 66866341. The reversal of 66866332 is 23366866.

It is a happy number.

It is a super-2 number, since 2×66866332² = 8942212710268448, which contains 22 as substring.

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

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, 642894 + ... + 642997.

Almost surely, 2^66866332 is an apocalyptic number.

It is an amenable number.

66866332 is a deficient number, since it is larger than the sum of its proper divisors (59151084).

66866332 is a wasteful number, since it uses less digits than its factorization.

66866332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285908 (or 1285906 counting only the distinct ones).

The product of its digits is 186624, while the sum is 40.

The square root of 66866332 is about 8177.1836227396. The cubic root of 66866332 is about 405.8845312147.

The spelling of 66866332 in words is "sixty-six million, eight hundred sixty-six thousand, three hundred thirty-two".