66520132 has 12 divisors (see below), whose sum is σ = 133040320. Its totient is φ = 28508616.

The previous prime is 66520063. The next prime is 66520151. The reversal of 66520132 is 23102566.

66520132 is an admirable number.

It is a super-2 number, since 2×66520132² = 8849855922594848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66520097 and 66520106.

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, 1187832 + ... + 1187887.

Almost surely, 2^66520132 is an apocalyptic number.

It is an amenable number.

66520132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66520132 is a wasteful number, since it uses less digits than its factorization.

66520132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375730 (or 2375728 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 66520132 is about 8155.9874938600. The cubic root of 66520132 is about 405.1828306255.

Adding to 66520132 its reverse (23102566), we get a palindrome (89622698).

The spelling of 66520132 in words is "sixty-six million, five hundred twenty thousand, one hundred thirty-two".