64651532 has 24 divisors (see below), whose sum is σ = 126299712. Its totient is φ = 28702800.

The previous prime is 64651529. The next prime is 64651553. The reversal of 64651532 is 23515646.

It is an unprimeable number.

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, 15194 + ... + 18977.

It is an arithmetic number, because the mean of its divisors is an integer number (5262488).

Almost surely, 2^64651532 is an apocalyptic number.

It is an amenable number.

64651532 is a deficient number, since it is larger than the sum of its proper divisors (61648180).

64651532 is a wasteful number, since it uses less digits than its factorization.

64651532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34229 (or 34227 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 64651532 is about 8040.6176379679. The cubic root of 64651532 is about 401.3527781540.

It can be divided in two parts, 6465 and 1532, that added together give a palindrome (7997).

The spelling of 64651532 in words is "sixty-four million, six hundred fifty-one thousand, five hundred thirty-two".