64510880 has 96 divisors (see below), whose sum is σ = 175633920. Its totient is φ = 21934080.

The previous prime is 64510867. The next prime is 64510889. The reversal of 64510880 is 8801546.

64510880 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 (32).

It is not an unprimeable number, because it can be changed into a prime (64510889) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 267560 + ... + 267800.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^64510880 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 64510880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87816960).

64510880 is an abundant number, since it is smaller than the sum of its proper divisors (111123040).

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

64510880 is a wasteful number, since it uses less digits than its factorization.

64510880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 64510880 is about 8031.8665327556. The cubic root of 64510880 is about 401.0615138125.

The spelling of 64510880 in words is "sixty-four million, five hundred ten thousand, eight hundred eighty".