66552718 has 8 divisors (see below), whose sum is σ = 99952848. Its totient is φ = 33235104.

The previous prime is 66552701. The next prime is 66552719. The reversal of 66552718 is 81725566.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66552719) 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, 18571 + ... + 21862.

It is an arithmetic number, because the mean of its divisors is an integer number (12494106).

Almost surely, 2^66552718 is an apocalyptic number.

66552718 is a deficient number, since it is larger than the sum of its proper divisors (33400130).

66552718 is a wasteful number, since it uses less digits than its factorization.

66552718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41258.

The product of its digits is 100800, while the sum is 40.

The square root of 66552718 is about 8157.9849227613. The cubic root of 66552718 is about 405.2489816886.

The spelling of 66552718 in words is "sixty-six million, five hundred fifty-two thousand, seven hundred eighteen".