653041709 has 2 divisors, whose sum is σ = 653041710. Its totient is φ = 653041708.

The previous prime is 653041687. The next prime is 653041751. The reversal of 653041709 is 907140356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616777225 + 36264484 = 24835^2 + 6022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-653041709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (653041409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326520854 + 326520855.

It is an arithmetic number, because the mean of its divisors is an integer number (326520855).

Almost surely, 2^653041709 is an apocalyptic number.

It is an amenable number.

653041709 is a deficient number, since it is larger than the sum of its proper divisors (1).

653041709 is an equidigital number, since it uses as much as digits as its factorization.

653041709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 653041709 is about 25554.6807649792. The cubic root of 653041709 is about 867.5882068619.

The spelling of 653041709 in words is "six hundred fifty-three million, forty-one thousand, seven hundred nine".