64648368 has 100 divisors (see below), whose sum is σ = 189680568. Its totient is φ = 21254400.

The previous prime is 64648357. The next prime is 64648373. The reversal of 64648368 is 86384646.

It is a super-2 number, since 2×64648368² = 8358822970126848, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 107268 + ... + 107868.

Almost surely, 2^64648368 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 64648368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94840284).

64648368 is an abundant number, since it is smaller than the sum of its proper divisors (125032200).

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

64648368 is a wasteful number, since it uses less digits than its factorization.

64648368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 689 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 64648368 is about 8040.4208845060. The cubic root of 64648368 is about 401.3462307407.

The spelling of 64648368 in words is "sixty-four million, six hundred forty-eight thousand, three hundred sixty-eight".