65628250 has 16 divisors (see below), whose sum is σ = 122856552. Its totient is φ = 26251200.

The previous prime is 65628221. The next prime is 65628259. The reversal of 65628250 is 5282656.

It can be written as a sum of positive squares in 4 ways, for example, as 26101881 + 39526369 = 5109^2 + 6287^2 .

It is not an unprimeable number, because it can be changed into a prime (65628259) 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, 131007 + ... + 131506.

Almost surely, 2^65628250 is an apocalyptic number.

65628250 is a deficient number, since it is larger than the sum of its proper divisors (57228302).

65628250 is a wasteful number, since it uses less digits than its factorization.

65628250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262530 (or 262520 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 65628250 is about 8101.1264648813. The cubic root of 65628250 is about 403.3638199906.

The spelling of 65628250 in words is "sixty-five million, six hundred twenty-eight thousand, two hundred fifty".