66568330 has 8 divisors (see below), whose sum is σ = 119823012. Its totient is φ = 26627328.

The previous prime is 66568321. The next prime is 66568331. The reversal of 66568330 is 3386566.

It can be written as a sum of positive squares in 2 ways, for example, as 64144081 + 2424249 = 8009^2 + 1557^2 .

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 66568330.

It is not an unprimeable number, because it can be changed into a prime (66568331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3328407 + ... + 3328426.

Almost surely, 2^66568330 is an apocalyptic number.

66568330 is a deficient number, since it is larger than the sum of its proper divisors (53254682).

66568330 is a wasteful number, since it uses less digits than its factorization.

66568330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6656840.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 66568330 is about 8158.9417205910. The cubic root of 66568330 is about 405.2806671086.

The spelling of 66568330 in words is "sixty-six million, five hundred sixty-eight thousand, three hundred thirty".