64039800 has 192 divisors, whose sum is σ = 224271360. Its totient is φ = 14976000.

The previous prime is 64039783. The next prime is 64039819. The reversal of 64039800 is 893046.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204444 + ... + 204756.

It is an arithmetic number, because the mean of its divisors is an integer number (1168080).

Almost surely, 2^64039800 is an apocalyptic number.

64039800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64039800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112135680).

64039800 is an abundant number, since it is smaller than the sum of its proper divisors (160231560).

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

64039800 is a wasteful number, since it uses less digits than its factorization.

64039800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 64039800 is about 8002.4871133917. The cubic root of 64039800 is about 400.0828994847.

The spelling of 64039800 in words is "sixty-four million, thirty-nine thousand, eight hundred".