64632500 has 60 divisors (see below), whose sum is σ = 143279136. Its totient is φ = 25500000.

The previous prime is 64632499. The next prime is 64632517. The reversal of 64632500 is 523646.

It is a self number, because there is not a number n which added to its sum of digits gives 64632500.

It is a congruent number.

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, 257375 + ... + 257625.

Almost surely, 2^64632500 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 64632500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71639568).

64632500 is an abundant number, since it is smaller than the sum of its proper divisors (78646636).

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

64632500 is a wasteful number, since it uses less digits than its factorization.

64632500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 64632500 is about 8039.4340596836. The cubic root of 64632500 is about 401.3133911227.

The spelling of 64632500 in words is "sixty-four million, six hundred thirty-two thousand, five hundred".