64406532 has 24 divisors (see below), whose sum is σ = 156816576. Its totient is φ = 20535328.

The previous prime is 64406521. The next prime is 64406533. The reversal of 64406532 is 23560446.

It is a self number, because there is not a number n which added to its sum of digits gives 64406532.

It is not an unprimeable number, because it can be changed into a prime (64406533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116403 + ... + 116954.

It is an arithmetic number, because the mean of its divisors is an integer number (6534024).

Almost surely, 2^64406532 is an apocalyptic number.

It is an amenable number.

64406532 is an abundant number, since it is smaller than the sum of its proper divisors (92410044).

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

64406532 is a wasteful number, since it uses less digits than its factorization.

64406532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233387 (or 233385 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 64406532 is about 8025.3680289442. The cubic root of 64406532 is about 400.8451546929.

Adding to 64406532 its reverse (23560446), we get a palindrome (87966978).

The spelling of 64406532 in words is "sixty-four million, four hundred six thousand, five hundred thirty-two".