64263516 has 24 divisors (see below), whose sum is σ = 150079104. Its totient is φ = 21402480.

The previous prime is 64263509. The next prime is 64263547. The reversal of 64263516 is 61536246.

It is a congruent number.

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, 22801 + ... + 25463.

It is an arithmetic number, because the mean of its divisors is an integer number (6253296).

Almost surely, 2^64263516 is an apocalyptic number.

It is an amenable number.

64263516 is an abundant number, since it is smaller than the sum of its proper divisors (85815588).

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

64263516 is a wasteful number, since it uses less digits than its factorization.

64263516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681 (or 4679 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 64263516 is about 8016.4528315209. The cubic root of 64263516 is about 400.5482399059.

The spelling of 64263516 in words is "sixty-four million, two hundred sixty-three thousand, five hundred sixteen".