64278872 has 64 divisors (see below), whose sum is σ = 144752640. Its totient is φ = 26179200.

The previous prime is 64278871. The next prime is 64278889. The reversal of 64278872 is 27887246.

64278872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64278871) 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, 105593 + ... + 106199.

It is an arithmetic number, because the mean of its divisors is an integer number (2261760).

Almost surely, 2^64278872 is an apocalyptic number.

64278872 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64278872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72376320).

64278872 is an abundant number, since it is smaller than the sum of its proper divisors (80473768).

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

64278872 is a wasteful number, since it uses less digits than its factorization.

64278872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 708 counting only the distinct ones).

The product of its digits is 301056, while the sum is 44.

The square root of 64278872 is about 8017.4105545369. The cubic root of 64278872 is about 400.5801415161.

The spelling of 64278872 in words is "sixty-four million, two hundred seventy-eight thousand, eight hundred seventy-two".