66518714 has 8 divisors (see below), whose sum is σ = 104116320. Its totient is φ = 31813276.

The previous prime is 66518713. The next prime is 66518723. The reversal of 66518714 is 41781566.

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

It is not an unprimeable number, because it can be changed into a prime (66518713) 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, 722984 + ... + 723075.

It is an arithmetic number, because the mean of its divisors is an integer number (13014540).

Almost surely, 2^66518714 is an apocalyptic number.

66518714 is a deficient number, since it is larger than the sum of its proper divisors (37597606).

66518714 is a wasteful number, since it uses less digits than its factorization.

66518714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446084.

The product of its digits is 40320, while the sum is 38.

The square root of 66518714 is about 8155.9005633958. The cubic root of 66518714 is about 405.1799515305.

The spelling of 66518714 in words is "sixty-six million, five hundred eighteen thousand, seven hundred fourteen".