64426516 has 48 divisors (see below), whose sum is σ = 145434240. Its totient is φ = 24232320.

The previous prime is 64426507. The next prime is 64426541. The reversal of 64426516 is 61562446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5326 + ... + 12538.

It is an arithmetic number, because the mean of its divisors is an integer number (3029880).

Almost surely, 2^64426516 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 64426516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72717120).

64426516 is an abundant number, since it is smaller than the sum of its proper divisors (81007724).

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

64426516 is a wasteful number, since it uses less digits than its factorization.

64426516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264 (or 7262 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 64426516 is about 8026.6129843166. The cubic root of 64426516 is about 400.8866083621.

The spelling of 64426516 in words is "sixty-four million, four hundred twenty-six thousand, five hundred sixteen".