64477512 has 96 divisors (see below), whose sum is σ = 196946400. Its totient is φ = 19530720.

The previous prime is 64477493. The next prime is 64477529. The reversal of 64477512 is 21577446.

64477512 is a `hidden beast` number, since 644 + 7 + 7 + 5 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24903 + ... + 27369.

It is an arithmetic number, because the mean of its divisors is an integer number (2051525).

Almost surely, 2^64477512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64477512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98473200).

64477512 is an abundant number, since it is smaller than the sum of its proper divisors (132468888).

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

64477512 is a wasteful number, since it uses less digits than its factorization.

64477512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504 (or 2483 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 64477512 is about 8029.7890383247. The cubic root of 64477512 is about 400.9923527210.

The spelling of 64477512 in words is "sixty-four million, four hundred seventy-seven thousand, five hundred twelve".