64712844 has 72 divisors (see below), whose sum is σ = 193892608. Its totient is φ = 18487440.

The previous prime is 64712839. The next prime is 64712867. The reversal of 64712844 is 44821746.

64712844 is a `hidden beast` number, since 647 + 1 + 2 + 8 + 4 + 4 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 64712799 and 64712808.

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, 2049 + ... + 11559.

Almost surely, 2^64712844 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 64712844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96946304).

64712844 is an abundant number, since it is smaller than the sum of its proper divisors (129179764).

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

64712844 is a wasteful number, since it uses less digits than its factorization.

64712844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9537 (or 9523 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 64712844 is about 8044.4293769042. The cubic root of 64712844 is about 401.4796117906.

It can be divided in two parts, 64712 and 844, that added together give a palindrome (65556).

The spelling of 64712844 in words is "sixty-four million, seven hundred twelve thousand, eight hundred forty-four".