66663080 has 32 divisors (see below), whose sum is σ = 163628640. Its totient is φ = 24240960.

The previous prime is 66663059. The next prime is 66663101. The reversal of 66663080 is 8036666.

It is an interprime number because it is at equal distance from previous prime (66663059) and next prime (66663101).

It is a self number, because there is not a number n which added to its sum of digits gives 66663080.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75314 + ... + 76193.

It is an arithmetic number, because the mean of its divisors is an integer number (5113395).

Almost surely, 2^66663080 is an apocalyptic number.

It is an amenable number.

66663080 is an abundant number, since it is smaller than the sum of its proper divisors (96965560).

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

66663080 is a wasteful number, since it uses less digits than its factorization.

66663080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151529 (or 151525 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 66663080 is about 8164.7461687428. The cubic root of 66663080 is about 405.4728612974.

The spelling of 66663080 in words is "sixty-six million, six hundred sixty-three thousand, eighty".