66716732 has 12 divisors (see below), whose sum is σ = 116812080. Its totient is φ = 33341856.

The previous prime is 66716731. The next prime is 66716759. The reversal of 66716732 is 23761766.

66716732 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66716732² = 8902244657519648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66716731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11744 + ... + 16472.

It is an arithmetic number, because the mean of its divisors is an integer number (9734340).

Almost surely, 2^66716732 is an apocalyptic number.

It is an amenable number.

66716732 is a deficient number, since it is larger than the sum of its proper divisors (50095348).

66716732 is a wasteful number, since it uses less digits than its factorization.

66716732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8260 (or 8258 counting only the distinct ones).

The product of its digits is 63504, while the sum is 38.

The square root of 66716732 is about 8168.0310969046. The cubic root of 66716732 is about 405.5816101301.

The spelling of 66716732 in words is "sixty-six million, seven hundred sixteen thousand, seven hundred thirty-two".