64134784 has 64 divisors (see below), whose sum is σ = 150796800. Its totient is φ = 26588160.

The previous prime is 64134773. The next prime is 64134809. The reversal of 64134784 is 48743146.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×64134784² = 8226541037453312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26622 + ... + 28930.

It is an arithmetic number, because the mean of its divisors is an integer number (2356200).

Almost surely, 2^64134784 is an apocalyptic number.

64134784 is a gapful number since it is divisible by the number (64) 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 64134784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75398400).

64134784 is an abundant number, since it is smaller than the sum of its proper divisors (86662016).

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

64134784 is a wasteful number, since it uses less digits than its factorization.

64134784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2349 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 64134784 is about 8008.4195694282. The cubic root of 64134784 is about 400.2806031087.

The spelling of 64134784 in words is "sixty-four million, one hundred thirty-four thousand, seven hundred eighty-four".