64464216 has 64 divisors (see below), whose sum is σ = 174009600. Its totient is φ = 19840128.

The previous prime is 64464209. The next prime is 64464217. The reversal of 64464216 is 61246446.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64464217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13995 + ... + 18021.

It is an arithmetic number, because the mean of its divisors is an integer number (2718900).

Almost surely, 2^64464216 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 64464216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87004800).

64464216 is an abundant number, since it is smaller than the sum of its proper divisors (109545384).

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

64464216 is a wasteful number, since it uses less digits than its factorization.

64464216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088 (or 4084 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 64464216 is about 8028.9610784958. The cubic root of 64464216 is about 400.9647877572.

The spelling of 64464216 in words is "sixty-four million, four hundred sixty-four thousand, two hundred sixteen".