66042368 has 40 divisors (see below), whose sum is σ = 150814752. Its totient is φ = 28302336.

The previous prime is 66042343. The next prime is 66042371. The reversal of 66042368 is 86324066.

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, 5630 + ... + 12797.

Almost surely, 2^66042368 is an apocalyptic number.

It is an amenable number.

66042368 is an abundant number, since it is smaller than the sum of its proper divisors (84772384).

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

66042368 is an equidigital number, since it uses as much as digits as its factorization.

66042368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18452 (or 18436 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 66042368 is about 8126.6455564396. The cubic root of 66042368 is about 404.2104579374.

The spelling of 66042368 in words is "sixty-six million, forty-two thousand, three hundred sixty-eight".