653740313 has 4 divisors (see below), whose sum is σ = 653799780. Its totient is φ = 653680848.

The previous prime is 653740303. The next prime is 653740337. The reversal of 653740313 is 313047356.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 107910544 + 545829769 = 10388^2 + 23363^2 .

It is a cyclic number.

It is not a de Polignac number, because 653740313 - 2¹⁸ = 653478169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 653740313.

It is not an unprimeable number, because it can be changed into a prime (653740303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7898 + ... + 37011.

It is an arithmetic number, because the mean of its divisors is an integer number (163449945).

Almost surely, 2^653740313 is an apocalyptic number.

It is an amenable number.

653740313 is a deficient number, since it is larger than the sum of its proper divisors (59467).

653740313 is a wasteful number, since it uses less digits than its factorization.

653740313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59466.

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 653740313 is about 25568.3459183421. The cubic root of 653740313 is about 867.8974696968.

Adding to 653740313 its reverse (313047356), we get a palindrome (966787669).

The spelling of 653740313 in words is "six hundred fifty-three million, seven hundred forty thousand, three hundred thirteen".