66099718 has 8 divisors (see below), whose sum is σ = 99906840. Its totient is φ = 32797440.

The previous prime is 66099713. The next prime is 66099751. The reversal of 66099718 is 81799066.

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 (66099713) 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, 125883 + ... + 126406.

It is an arithmetic number, because the mean of its divisors is an integer number (12488355).

Almost surely, 2^66099718 is an apocalyptic number.

66099718 is a deficient number, since it is larger than the sum of its proper divisors (33807122).

66099718 is a wasteful number, since it uses less digits than its factorization.

66099718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252422.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 66099718 is about 8130.1733068859. The cubic root of 66099718 is about 404.3274271072.

The spelling of 66099718 in words is "sixty-six million, ninety-nine thousand, seven hundred eighteen".