66316552 has 16 divisors (see below), whose sum is σ = 124431660. Its totient is φ = 33134784.

The previous prime is 66316529. The next prime is 66316559. The reversal of 66316552 is 25561366.

It can be written as a sum of positive squares in 2 ways, for example, as 65383396 + 933156 = 8086^2 + 966^2 .

It is not an unprimeable number, because it can be changed into a prime (66316559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17098 + ... + 20614.

Almost surely, 2^66316552 is an apocalyptic number.

It is an amenable number.

66316552 is a deficient number, since it is larger than the sum of its proper divisors (58115108).

66316552 is a wasteful number, since it uses less digits than its factorization.

66316552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5876 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 66316552 is about 8143.4975287035. The cubic root of 66316552 is about 404.7690640953.

The spelling of 66316552 in words is "sixty-six million, three hundred sixteen thousand, five hundred fifty-two".