66316480 has 28 divisors (see below), whose sum is σ = 157916880. Its totient is φ = 26526464.

The previous prime is 66316477. The next prime is 66316489. The reversal of 66316480 is 8461366.

It is not an unprimeable number, because it can be changed into a prime (66316489) 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, 103300 + ... + 103939.

Almost surely, 2^66316480 is an apocalyptic number.

It is an amenable number.

66316480 is an abundant number, since it is smaller than the sum of its proper divisors (91600400).

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

66316480 is a wasteful number, since it uses less digits than its factorization.

66316480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207256 (or 207246 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 66316480 is about 8143.4931079973. The cubic root of 66316480 is about 404.7689176090.

The spelling of 66316480 in words is "sixty-six million, three hundred sixteen thousand, four hundred eighty".