64263250 has 16 divisors (see below), whose sum is σ = 120301272. Its totient is φ = 25705200.

The previous prime is 64263211. The next prime is 64263257. The reversal of 64263250 is 5236246.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43204329 + 21058921 = 6573^2 + 4589^2 .

It is not an unprimeable number, because it can be changed into a prime (64263257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128277 + ... + 128776.

Almost surely, 2^64263250 is an apocalyptic number.

64263250 is a deficient number, since it is larger than the sum of its proper divisors (56038022).

64263250 is a wasteful number, since it uses less digits than its factorization.

64263250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257070 (or 257060 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 64263250 is about 8016.4362406246. The cubic root of 64263250 is about 400.5476872544.

Adding to 64263250 its reverse (5236246), we get a palindrome (69499496).

The spelling of 64263250 in words is "sixty-four million, two hundred sixty-three thousand, two hundred fifty".