66924860 has 24 divisors (see below), whose sum is σ = 144342240. Its totient is φ = 26046144.

The previous prime is 66924857. The next prime is 66924889. The reversal of 66924860 is 6842966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44480 + ... + 45959.

It is an arithmetic number, because the mean of its divisors is an integer number (6014260).

Almost surely, 2^66924860 is an apocalyptic number.

It is an amenable number.

66924860 is an abundant number, since it is smaller than the sum of its proper divisors (77417380).

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

66924860 is a wasteful number, since it uses less digits than its factorization.

66924860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90485 (or 90483 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 66924860 is about 8180.7615782395. The cubic root of 66924860 is about 406.0029200531.

The spelling of 66924860 in words is "sixty-six million, nine hundred twenty-four thousand, eight hundred sixty".