64329648 has 80 divisors (see below), whose sum is σ = 171405696. Its totient is φ = 20782080.

The previous prime is 64329641. The next prime is 64329659. The reversal of 64329648 is 84692346.

It is a happy number.

It is a super-2 number, since 2×64329648² = 8276607223607808, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

64329648 is a modest number, since divided by 9648 gives 6432 as remainder.

It is not an unprimeable number, because it can be changed into a prime (64329641) 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, 266808 + ... + 267048.

Almost surely, 2^64329648 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 64329648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85702848).

64329648 is an abundant number, since it is smaller than the sum of its proper divisors (107076048).

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

64329648 is a wasteful number, since it uses less digits than its factorization.

64329648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 64329648 is about 8020.5765378806. The cubic root of 64329648 is about 400.6855909081.

The spelling of 64329648 in words is "sixty-four million, three hundred twenty-nine thousand, six hundred forty-eight".