64520132 has 12 divisors (see below), whose sum is σ = 114074940. Its totient is φ = 31927296.

The previous prime is 64520123. The next prime is 64520149. The reversal of 64520132 is 23102546.

It can be written as a sum of positive squares in 2 ways, for example, as 33339076 + 31181056 = 5774^2 + 5584^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64520098 and 64520107.

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, 82757 + ... + 83532.

It is an arithmetic number, because the mean of its divisors is an integer number (9506245).

Almost surely, 2^64520132 is an apocalyptic number.

It is an amenable number.

64520132 is a deficient number, since it is larger than the sum of its proper divisors (49554808).

64520132 is a wasteful number, since it uses less digits than its factorization.

64520132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166390 (or 166388 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 64520132 is about 8032.4424678923. The cubic root of 64520132 is about 401.0806859984.

Adding to 64520132 its reverse (23102546), we get a palindrome (87622678).

The spelling of 64520132 in words is "sixty-four million, five hundred twenty thousand, one hundred thirty-two".