66652715 has 8 divisors (see below), whose sum is σ = 80027088. Its totient is φ = 53292960.

The previous prime is 66652673. The next prime is 66652753. The reversal of 66652715 is 51725666.

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

It is not a de Polignac number, because 66652715 - 2¹⁴ = 66636331 is a prime.

It is a Duffinian 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, 15989 + ... + 19721.

It is an arithmetic number, because the mean of its divisors is an integer number (10003386).

Almost surely, 2^66652715 is an apocalyptic number.

66652715 is a deficient number, since it is larger than the sum of its proper divisors (13374373).

66652715 is a wasteful number, since it uses less digits than its factorization.

66652715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7309.

The product of its digits is 75600, while the sum is 38.

The square root of 66652715 is about 8164.1114029636. Note that the first 3 decimals coincide. The cubic root of 66652715 is about 405.4518454466.

The spelling of 66652715 in words is "sixty-six million, six hundred fifty-two thousand, seven hundred fifteen".