64373800 has 48 divisors (see below), whose sum is σ = 152518140. Its totient is φ = 25259520.

The previous prime is 64373773. The next prime is 64373807. The reversal of 64373800 is 837346.

It can be written as a sum of positive squares in 6 ways, for example, as 45346756 + 19027044 = 6734^2 + 4362^2 .

It is a super-2 number, since 2×64373800² = 8287972252880000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (64373807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7564 + ... + 13636.

Almost surely, 2^64373800 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 64373800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76259070).

64373800 is an abundant number, since it is smaller than the sum of its proper divisors (88144340).

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

64373800 is a wasteful number, since it uses less digits than its factorization.

64373800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6142 (or 6133 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 64373800 is about 8023.3284863578. The cubic root of 64373800 is about 400.7772387715. Note that the first 3 decimals are identical.

The spelling of 64373800 in words is "sixty-four million, three hundred seventy-three thousand, eight hundred".