66380570 has 8 divisors (see below), whose sum is σ = 119485044. Its totient is φ = 26552224.

The previous prime is 66380491. The next prime is 66380593. The reversal of 66380570 is 7508366.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65593801 + 786769 = 8099^2 + 887^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66380570.

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, 3319019 + ... + 3319038.

Almost surely, 2^66380570 is an apocalyptic number.

66380570 is a deficient number, since it is larger than the sum of its proper divisors (53104474).

66380570 is a wasteful number, since it uses less digits than its factorization.

66380570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6638064.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66380570 is about 8147.4272012703. The cubic root of 66380570 is about 404.8992687551.

The spelling of 66380570 in words is "sixty-six million, three hundred eighty thousand, five hundred seventy".