653913641 has 2 divisors, whose sum is σ = 653913642. Its totient is φ = 653913640.

The previous prime is 653913613. The next prime is 653913647. The reversal of 653913641 is 146319356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 610287616 + 43626025 = 24704^2 + 6605^2 .

It is a cyclic number.

It is not a de Polignac number, because 653913641 - 2²² = 649719337 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 653913595 and 653913604.

It is not a weakly prime, because it can be changed into another prime (653913647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326956820 + 326956821.

It is an arithmetic number, because the mean of its divisors is an integer number (326956821).

Almost surely, 2^653913641 is an apocalyptic number.

It is an amenable number.

653913641 is a deficient number, since it is larger than the sum of its proper divisors (1).

653913641 is an equidigital number, since it uses as much as digits as its factorization.

653913641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 653913641 is about 25571.7351972837. The cubic root of 653913641 is about 867.9741656146.

The spelling of 653913641 in words is "six hundred fifty-three million, nine hundred thirteen thousand, six hundred forty-one".