66715052 has 6 divisors (see below), whose sum is σ = 116751348. Its totient is φ = 33357524.

The previous prime is 66715039. The next prime is 66715063. The reversal of 66715052 is 25051766.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8339378 + ... + 8339385.

It is an arithmetic number, because the mean of its divisors is an integer number (19458558).

Almost surely, 2^66715052 is an apocalyptic number.

It is an amenable number.

66715052 is a deficient number, since it is larger than the sum of its proper divisors (50036296).

66715052 is a wasteful number, since it uses less digits than its factorization.

66715052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16678767 (or 16678765 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 66715052 is about 8167.9282562961. The cubic root of 66715052 is about 405.5782057726.

The spelling of 66715052 in words is "sixty-six million, seven hundred fifteen thousand, fifty-two".