869637653 has 2 divisors, whose sum is σ = 869637654. Its totient is φ = 869637652.

The previous prime is 869637623. The next prime is 869637683. The reversal of 869637653 is 356736968.

It is a balanced prime because it is at equal distance from previous prime (869637623) and next prime (869637683).

It can be written as a sum of positive squares in only one way, i.e., 563492644 + 306145009 = 23738^2 + 17497^2 .

It is a cyclic number.

It is not a de Polignac number, because 869637653 - 2¹⁸ = 869375509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 869637595 and 869637604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869637623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434818826 + 434818827.

It is an arithmetic number, because the mean of its divisors is an integer number (434818827).

Almost surely, 2^869637653 is an apocalyptic number.

It is an amenable number.

869637653 is a deficient number, since it is larger than the sum of its proper divisors (1).

869637653 is an equidigital number, since it uses as much as digits as its factorization.

869637653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 53.

The square root of 869637653 is about 29489.6194109046. The cubic root of 869637653 is about 954.5077195673.

The spelling of 869637653 in words is "eight hundred sixty-nine million, six hundred thirty-seven thousand, six hundred fifty-three".