66974268 has 24 divisors (see below), whose sum is σ = 156524368. Its totient is φ = 22288896.

The previous prime is 66974261. The next prime is 66974269. The reversal of 66974268 is 86247966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66974261) 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, 3930 + ... + 12222.

Almost surely, 2^66974268 is an apocalyptic number.

It is an amenable number.

66974268 is an abundant number, since it is smaller than the sum of its proper divisors (89550100).

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

66974268 is a wasteful number, since it uses less digits than its factorization.

66974268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8973 (or 8971 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 66974268 is about 8183.7807888530. The cubic root of 66974268 is about 406.1028074883.

The spelling of 66974268 in words is "sixty-six million, nine hundred seventy-four thousand, two hundred sixty-eight".