65653250 has 32 divisors (see below), whose sum is σ = 132363504. Its totient is φ = 24240000.

The previous prime is 65653243. The next prime is 65653271. The reversal of 65653250 is 5235656.

It can be written as a sum of positive squares in 8 ways, for example, as 10106041 + 55547209 = 3179^2 + 7453^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6851 + ... + 13350.

Almost surely, 2^65653250 is an apocalyptic number.

65653250 is an abundant number, since it is smaller than the sum of its proper divisors (66710254).

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

65653250 is a wasteful number, since it uses less digits than its factorization.

65653250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20231 (or 20221 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 65653250 is about 8102.6693132572. The cubic root of 65653250 is about 403.4150317544.

The spelling of 65653250 in words is "sixty-five million, six hundred fifty-three thousand, two hundred fifty".