66413682 has 20 divisors (see below), whose sum is σ = 148816206. Its totient is φ = 22137840.

The previous prime is 66413657. The next prime is 66413707. The reversal of 66413682 is 28631466.

66413682 is a `hidden beast` number, since 6 + 641 + 3 + 6 + 8 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (66413657) and next prime (66413707).

It can be written as a sum of positive squares in only one way, i.e., 35176761 + 31236921 = 5931^2 + 5589^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 204819 + ... + 205142.

Almost surely, 2^66413682 is an apocalyptic number.

66413682 is an abundant number, since it is smaller than the sum of its proper divisors (82402524).

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

66413682 is a wasteful number, since it uses less digits than its factorization.

66413682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409975 (or 409966 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 66413682 is about 8149.4590004490. The cubic root of 66413682 is about 404.9665816047.

The spelling of 66413682 in words is "sixty-six million, four hundred thirteen thousand, six hundred eighty-two".