666480064 has 28 divisors (see below), whose sum is σ = 1334693800. Its totient is φ = 330179328.

The previous prime is 666480037. The next prime is 666480071. The reversal of 666480064 is 460084666.

It is a junction number, because it is equal to n+sod(n) for n = 666479999 and 666480026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40794 + ... + 54745.

Almost surely, 2^666480064 is an apocalyptic number.

666480064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

666480064 is an abundant number, since it is smaller than the sum of its proper divisors (668213736).

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

666480064 is a wasteful number, since it uses less digits than its factorization.

666480064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95660 (or 95650 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 666480064 is about 25816.2751767175. The cubic root of 666480064 is about 873.4989509083.

The spelling of 666480064 in words is "six hundred sixty-six million, four hundred eighty thousand, sixty-four".