64536250 has 40 divisors (see below), whose sum is σ = 128124612. Its totient is φ = 24288000.

The previous prime is 64536239. The next prime is 64536253. The reversal of 64536250 is 5263546.

It can be written as a sum of positive squares in 10 ways, for example, as 199809 + 64336441 = 447^2 + 8021^2 .

It is not an unprimeable number, because it can be changed into a prime (64536253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19732 + ... + 22768.

Almost surely, 2^64536250 is an apocalyptic number.

64536250 is a deficient number, since it is larger than the sum of its proper divisors (63588362).

64536250 is a wasteful number, since it uses less digits than its factorization.

64536250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076 (or 3061 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 64536250 is about 8033.4457115238. The cubic root of 64536250 is about 401.1140816743.

Adding to 64536250 its reverse (5263546), we get a palindrome (69799796).

The spelling of 64536250 in words is "sixty-four million, five hundred thirty-six thousand, two hundred fifty".