64413522 has 64 divisors (see below), whose sum is σ = 148911360. Its totient is φ = 20621952.

The previous prime is 64413509. The next prime is 64413523. The reversal of 64413522 is 22531446.

64413522 is a `hidden beast` number, since 644 + 13 + 5 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (64413523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205638 + ... + 205950.

It is an arithmetic number, because the mean of its divisors is an integer number (2326740).

Almost surely, 2^64413522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64413522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74455680).

64413522 is an abundant number, since it is smaller than the sum of its proper divisors (84497838).

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

64413522 is a wasteful number, since it uses less digits than its factorization.

64413522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 458 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 64413522 is about 8025.8035111757. The cubic root of 64413522 is about 400.8596553249.

Adding to 64413522 its reverse (22531446), we get a palindrome (86944968).

The spelling of 64413522 in words is "sixty-four million, four hundred thirteen thousand, five hundred twenty-two".