66714998 has 16 divisors (see below), whose sum is σ = 114627744. Its totient is φ = 28527360.

The previous prime is 66714983. The next prime is 66715001. The reversal of 66714998 is 89941766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286 + ... + 11622.

It is an arithmetic number, because the mean of its divisors is an integer number (7164234).

Almost surely, 2^66714998 is an apocalyptic number.

66714998 is a deficient number, since it is larger than the sum of its proper divisors (47912746).

66714998 is a wasteful number, since it uses less digits than its factorization.

66714998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10807.

The product of its digits is 653184, while the sum is 50.

The square root of 66714998 is about 8167.9249506836. The cubic root of 66714998 is about 405.5780963459.

The spelling of 66714998 in words is "sixty-six million, seven hundred fourteen thousand, nine hundred ninety-eight".