66708315 has 12 divisors (see below), whose sum is σ = 115627824. Its totient is φ = 35577744.

The previous prime is 66708293. The next prime is 66708329. The reversal of 66708315 is 51380766.

It is not a de Polignac number, because 66708315 - 2⁶ = 66708251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66708315.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 741159 + ... + 741248.

It is an arithmetic number, because the mean of its divisors is an integer number (9635652).

Almost surely, 2^66708315 is an apocalyptic number.

66708315 is a deficient number, since it is larger than the sum of its proper divisors (48919509).

66708315 is a wasteful number, since it uses less digits than its factorization.

66708315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482418 (or 1482415 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 66708315 is about 8167.5158402050. The cubic root of 66708315 is about 405.5645533196.

The spelling of 66708315 in words is "sixty-six million, seven hundred eight thousand, three hundred fifteen".