66413708 has 6 divisors (see below), whose sum is σ = 116223996. Its totient is φ = 33206852.

The previous prime is 66413707. The next prime is 66413731. The reversal of 66413708 is 80731466.

It is a super-2 number, since 2×66413708² = 8821561220618528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66413707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8301710 + ... + 8301717.

It is an arithmetic number, because the mean of its divisors is an integer number (19370666).

Almost surely, 2^66413708 is an apocalyptic number.

It is an amenable number.

66413708 is a deficient number, since it is larger than the sum of its proper divisors (49810288).

66413708 is a wasteful number, since it uses less digits than its factorization.

66413708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16603431 (or 16603429 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 66413708 is about 8149.4605956468. The cubic root of 66413708 is about 404.9666344509.

The spelling of 66413708 in words is "sixty-six million, four hundred thirteen thousand, seven hundred eight".