66240718 has 8 divisors (see below), whose sum is σ = 100385712. Its totient is φ = 32778816.

The previous prime is 66240709. The next prime is 66240731. The reversal of 66240718 is 81704266.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170530 + ... + 170917.

It is an arithmetic number, because the mean of its divisors is an integer number (12548214).

Almost surely, 2^66240718 is an apocalyptic number.

66240718 is a deficient number, since it is larger than the sum of its proper divisors (34144994).

66240718 is a wasteful number, since it uses less digits than its factorization.

66240718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341546.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 66240718 is about 8138.8400893493. The cubic root of 66240718 is about 404.6147186924.

The spelling of 66240718 in words is "sixty-six million, two hundred forty thousand, seven hundred eighteen".