64322500 has 60 divisors (see below), whose sum is σ = 153513360. Its totient is φ = 23380000.

The previous prime is 64322491. The next prime is 64322501. The reversal of 64322500 is 522346.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (64322501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26331 + ... + 28669.

It is an arithmetic number, because the mean of its divisors is an integer number (2558556).

Almost surely, 2^64322500 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 64322500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76756680).

64322500 is an abundant number, since it is smaller than the sum of its proper divisors (89190860).

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

64322500 is a wasteful number, since it uses less digits than its factorization.

64322500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 64322500 is about 8020.1309216247. The cubic root of 64322500 is about 400.6707496087.

Adding to 64322500 its reverse (522346), we get a palindrome (64844846).

The spelling of 64322500 in words is "sixty-four million, three hundred twenty-two thousand, five hundred".