66604914 has 24 divisors (see below), whose sum is σ = 144939132. Its totient is φ = 22104960.

The previous prime is 66604907. The next prime is 66604919. The reversal of 66604914 is 41940666.

It can be written as a sum of positive squares in 2 ways, for example, as 65853225 + 751689 = 8115^2 + 867^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66604919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3747 + ... + 12134.

Almost surely, 2^66604914 is an apocalyptic number.

66604914 is an abundant number, since it is smaller than the sum of its proper divisors (78334218).

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

66604914 is a wasteful number, since it uses less digits than its factorization.

66604914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16122 (or 16119 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 66604914 is about 8161.1833700757. The cubic root of 66604914 is about 405.3548969645.

The spelling of 66604914 in words is "sixty-six million, six hundred four thousand, nine hundred fourteen".