65663650 has 24 divisors (see below), whose sum is σ = 131530644. Its totient is φ = 24244800.

The previous prime is 65663603. The next prime is 65663651. The reversal of 65663650 is 5636656.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 683929 + 64979721 = 827^2 + 8061^2 .

It is not an unprimeable number, because it can be changed into a prime (65663651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49861 + ... + 51160.

Almost surely, 2^65663650 is an apocalyptic number.

65663650 is an abundant number, since it is smaller than the sum of its proper divisors (65866994).

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

65663650 is a wasteful number, since it uses less digits than its factorization.

65663650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101046 (or 101041 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 65663650 is about 8103.3110516628. The cubic root of 65663650 is about 403.4363320192.

The spelling of 65663650 in words is "sixty-five million, six hundred sixty-three thousand, six hundred fifty".