653983641 has 12 divisors (see below), whose sum is σ = 944871460. Its totient is φ = 435883680.

The previous prime is 653983639. The next prime is 653983651. The reversal of 653983641 is 146389356.

It can be written as a sum of positive squares in 2 ways, for example, as 411278400 + 242705241 = 20280^2 + 15579^2 .

It is not a de Polignac number, because 653983641 - 2¹ = 653983639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653983651) 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, 54495 + ... + 65403.

Almost surely, 2^653983641 is an apocalyptic number.

It is an amenable number.

653983641 is a deficient number, since it is larger than the sum of its proper divisors (290887819).

653983641 is a wasteful number, since it uses less digits than its factorization.

653983641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17576 (or 17573 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 653983641 is about 25573.1038593285. The cubic root of 653983641 is about 868.0051360771.

The spelling of 653983641 in words is "six hundred fifty-three million, nine hundred eighty-three thousand, six hundred forty-one".