64864480 has 72 divisors (see below), whose sum is σ = 161876232. Its totient is φ = 24558336.

The previous prime is 64864477. The next prime is 64864507. The reversal of 64864480 is 8446846.

64864480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57199 + ... + 58321.

It is an arithmetic number, because the mean of its divisors is an integer number (2248281).

Almost surely, 2^64864480 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 64864480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80938116).

64864480 is an abundant number, since it is smaller than the sum of its proper divisors (97011752).

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

64864480 is a wasteful number, since it uses less digits than its factorization.

64864480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1149 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 64864480 is about 8053.8487693773. The cubic root of 64864480 is about 401.7929513062.

The spelling of 64864480 in words is "sixty-four million, eight hundred sixty-four thousand, four hundred eighty".