66866324 has 12 divisors (see below), whose sum is σ = 133732704. Its totient is φ = 28656984.

The previous prime is 66866297. The next prime is 66866329. The reversal of 66866324 is 42366866.

66866324 is an admirable number.

It is a super-2 number, since 2×66866324² = 8942210570545952, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66866329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194014 + ... + 1194069.

It is an arithmetic number, because the mean of its divisors is an integer number (11144392).

Almost surely, 2^66866324 is an apocalyptic number.

It is an amenable number.

66866324 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66866324 is a wasteful number, since it uses less digits than its factorization.

66866324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388094 (or 2388092 counting only the distinct ones).

The product of its digits is 248832, while the sum is 41.

The square root of 66866324 is about 8177.1831335736. The cubic root of 66866324 is about 405.8845150278.

The spelling of 66866324 in words is "sixty-six million, eight hundred sixty-six thousand, three hundred twenty-four".