66524712 has 16 divisors (see below), whose sum is σ = 166311840. Its totient is φ = 22174896.

The previous prime is 66524677. The next prime is 66524737. The reversal of 66524712 is 21742566.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385908 + ... + 1385955.

It is an arithmetic number, because the mean of its divisors is an integer number (10394490).

Almost surely, 2^66524712 is an apocalyptic number.

It is an amenable number.

66524712 is an abundant number, since it is smaller than the sum of its proper divisors (99787128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66524712 is a wasteful number, since it uses less digits than its factorization.

66524712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771872 (or 2771868 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 66524712 is about 8156.2682643474. The cubic root of 66524712 is about 405.1921295386.

The spelling of 66524712 in words is "sixty-six million, five hundred twenty-four thousand, seven hundred twelve".