64775532 has 12 divisors (see below), whose sum is σ = 151142936. Its totient is φ = 21591840.

The previous prime is 64775507. The next prime is 64775551. The reversal of 64775532 is 23557746.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2698969 + ... + 2698992.

Almost surely, 2^64775532 is an apocalyptic number.

It is an amenable number.

64775532 is an abundant number, since it is smaller than the sum of its proper divisors (86367404).

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

64775532 is a wasteful number, since it uses less digits than its factorization.

64775532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397968 (or 5397966 counting only the distinct ones).

The product of its digits is 176400, while the sum is 39.

The square root of 64775532 is about 8048.3247946389. The cubic root of 64775532 is about 401.6092091003.

The spelling of 64775532 in words is "sixty-four million, seven hundred seventy-five thousand, five hundred thirty-two".