66270904 has 16 divisors (see below), whose sum is σ = 142009200. Its totient is φ = 28401792.

The previous prime is 66270881. The next prime is 66270907. The reversal of 66270904 is 40907266.

It is a self number, because there is not a number n which added to its sum of digits gives 66270904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66270907) 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, 591649 + ... + 591760.

It is an arithmetic number, because the mean of its divisors is an integer number (8875575).

Almost surely, 2^66270904 is an apocalyptic number.

It is an amenable number.

66270904 is an abundant number, since it is smaller than the sum of its proper divisors (75738296).

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

66270904 is a wasteful number, since it uses less digits than its factorization.

66270904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183422 (or 1183418 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 66270904 is about 8140.6943192826. The cubic root of 66270904 is about 404.6761705479.

The spelling of 66270904 in words is "sixty-six million, two hundred seventy thousand, nine hundred four".