66064488 has 32 divisors (see below), whose sum is σ = 188756160. Its totient is φ = 18875520.

The previous prime is 66064477. The next prime is 66064507. The reversal of 66064488 is 88446066.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 196453 + ... + 196788.

It is an arithmetic number, because the mean of its divisors is an integer number (5898630).

Almost surely, 2^66064488 is an apocalyptic number.

It is an amenable number.

66064488 is an abundant number, since it is smaller than the sum of its proper divisors (122691672).

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

66064488 is a wasteful number, since it uses less digits than its factorization.

66064488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393257 (or 393253 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 66064488 is about 8128.0063976353. The cubic root of 66064488 is about 404.2555811795.

The spelling of 66064488 in words is "sixty-six million, sixty-four thousand, four hundred eighty-eight".