64648472 has 64 divisors (see below), whose sum is σ = 145938240. Its totient is φ = 26265600.

The previous prime is 64648447. The next prime is 64648481. The reversal of 64648472 is 27484646.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 84572 + ... + 85332.

It is an arithmetic number, because the mean of its divisors is an integer number (2280285).

Almost surely, 2^64648472 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 64648472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72969120).

64648472 is an abundant number, since it is smaller than the sum of its proper divisors (81289768).

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

64648472 is a wasteful number, since it uses less digits than its factorization.

64648472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 848 counting only the distinct ones).

The product of its digits is 258048, while the sum is 41.

The square root of 64648472 is about 8040.4273518265. The cubic root of 64648472 is about 401.3464459561.

The spelling of 64648472 in words is "sixty-four million, six hundred forty-eight thousand, four hundred seventy-two".