66380704 has 24 divisors (see below), whose sum is σ = 140740740. Its totient is φ = 30637056.

The previous prime is 66380693. The next prime is 66380761. The reversal of 66380704 is 40708366.

It can be written as a sum of positive squares in 2 ways, for example, as 66259600 + 121104 = 8140^2 + 348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66380704.

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, 79369 + ... + 80200.

Almost surely, 2^66380704 is an apocalyptic number.

It is an amenable number.

66380704 is an abundant number, since it is smaller than the sum of its proper divisors (74360036).

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

66380704 is a wasteful number, since it uses less digits than its factorization.

66380704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159592 (or 159584 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 66380704 is about 8147.4354247211. The cubic root of 66380704 is about 404.8995412067.

The spelling of 66380704 in words is "sixty-six million, three hundred eighty thousand, seven hundred four".