66974454 has 24 divisors (see below), whose sum is σ = 145290600. Its totient is φ = 22297248.

The previous prime is 66974447. The next prime is 66974471. The reversal of 66974454 is 45447966.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17109 + ... + 20655.

It is an arithmetic number, because the mean of its divisors is an integer number (6053775).

Almost surely, 2^66974454 is an apocalyptic number.

66974454 is an abundant number, since it is smaller than the sum of its proper divisors (78316146).

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

66974454 is a wasteful number, since it uses less digits than its factorization.

66974454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604 (or 4601 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 66974454 is about 8183.7921527859. The cubic root of 66974454 is about 406.1031834289.

The spelling of 66974454 in words is "sixty-six million, nine hundred seventy-four thousand, four hundred fifty-four".