66713366 has 4 divisors (see below), whose sum is σ = 100070052. Its totient is φ = 33356682.

The previous prime is 66713359. The next prime is 66713371. The reversal of 66713366 is 66331766.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16678340 + ... + 16678343.

It is an arithmetic number, because the mean of its divisors is an integer number (25017513).

Almost surely, 2^66713366 is an apocalyptic number.

66713366 is a deficient number, since it is larger than the sum of its proper divisors (33356686).

66713366 is a wasteful number, since it uses less digits than its factorization.

66713366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33356685.

The product of its digits is 81648, while the sum is 38.

The square root of 66713366 is about 8167.8250470979. The cubic root of 66713366 is about 405.5747891992.

The spelling of 66713366 in words is "sixty-six million, seven hundred thirteen thousand, three hundred sixty-six".