66369730 has 16 divisors (see below), whose sum is σ = 136532160. Its totient is φ = 22755312.

The previous prime is 66369707. The next prime is 66369733. The reversal of 66369730 is 3796366.

It is not an unprimeable number, because it can be changed into a prime (66369733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474000 + ... + 474139.

It is an arithmetic number, because the mean of its divisors is an integer number (8533260).

Almost surely, 2^66369730 is an apocalyptic number.

66369730 is an abundant number, since it is smaller than the sum of its proper divisors (70162430).

66369730 is a wasteful number, since it uses less digits than its factorization.

66369730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948153.

The product of its (nonzero) digits is 122472, while the sum is 40.

The square root of 66369730 is about 8146.7619334310. The cubic root of 66369730 is about 404.8772274308.

The spelling of 66369730 in words is "sixty-six million, three hundred sixty-nine thousand, seven hundred thirty".