64886844 has 96 divisors (see below), whose sum is σ = 173279232. Its totient is φ = 18720000.

The previous prime is 64886839. The next prime is 64886849. The reversal of 64886844 is 44868846.

It is an interprime number because it is at equal distance from previous prime (64886839) and next prime (64886849).

It is a junction number, because it is equal to n+sod(n) for n = 64886793 and 64886802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64886849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413214 + ... + 413370.

It is an arithmetic number, because the mean of its divisors is an integer number (1804992).

Almost surely, 2^64886844 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 64886844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86639616).

64886844 is an abundant number, since it is smaller than the sum of its proper divisors (108392388).

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

64886844 is a wasteful number, since it uses less digits than its factorization.

64886844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 305 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 48.

The square root of 64886844 is about 8055.2370542399. The cubic root of 64886844 is about 401.8391227756.

The spelling of 64886844 in words is "sixty-four million, eight hundred eighty-six thousand, eight hundred forty-four".