64511332 has 12 divisors (see below), whose sum is σ = 112972860. Its totient is φ = 32233376.

The previous prime is 64511329. The next prime is 64511339. The reversal of 64511332 is 23311546.

It can be written as a sum of positive squares in 2 ways, for example, as 23755876 + 40755456 = 4874^2 + 6384^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64511297 and 64511306.

It is not an unprimeable number, because it can be changed into a prime (64511339) 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, 2118 + ... + 11554.

It is an arithmetic number, because the mean of its divisors is an integer number (9414405).

Almost surely, 2^64511332 is an apocalyptic number.

It is an amenable number.

64511332 is a deficient number, since it is larger than the sum of its proper divisors (48461528).

64511332 is a wasteful number, since it uses less digits than its factorization.

64511332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11150 (or 11148 counting only the distinct ones).

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

The square root of 64511332 is about 8031.8946706241. The cubic root of 64511332 is about 401.0624504988.

Adding to 64511332 its reverse (23311546), we get a palindrome (87822878).

The spelling of 64511332 in words is "sixty-four million, five hundred eleven thousand, three hundred thirty-two".