64802500 has 135 divisors (see below), whose sum is σ = 172325307. Its totient is φ = 21252000.

The previous prime is 64802459. The next prime is 64802537. The reversal of 64802500 is 520846.

The square root of 64802500 is 8050.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 5080516 + 59721984 = 2254^2 + 7728^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2817489 + ... + 2817511.

Almost surely, 2^64802500 is an apocalyptic number.

64802500 is the 8050-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64802500

64802500 is an abundant number, since it is smaller than the sum of its proper divisors (107522807).

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

64802500 is a wasteful number, since it uses less digits than its factorization.

64802500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The cubic root of 64802500 is about 401.6649353606.

Multiplying 64802500 by its sum of digits (25), we get a square (1620062500 = 40250²).

64802500 divided by its sum of digits (25) gives a square (2592100 = 1610²).

The spelling of 64802500 in words is "sixty-four million, eight hundred two thousand, five hundred".