868629653 has 2 divisors, whose sum is σ = 868629654. Its totient is φ = 868629652.

The previous prime is 868629647. The next prime is 868629677. The reversal of 868629653 is 356926868.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 668067409 + 200562244 = 25847^2 + 14162^2 .

It is a cyclic number.

It is not a de Polignac number, because 868629653 - 2¹⁴ = 868613269 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 868629595 and 868629604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868629613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434314826 + 434314827.

It is an arithmetic number, because the mean of its divisors is an integer number (434314827).

Almost surely, 2^868629653 is an apocalyptic number.

It is an amenable number.

868629653 is a deficient number, since it is larger than the sum of its proper divisors (1).

868629653 is an equidigital number, since it uses as much as digits as its factorization.

868629653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 53.

The square root of 868629653 is about 29472.5236958086. The cubic root of 868629653 is about 954.1387859243.

The spelling of 868629653 in words is "eight hundred sixty-eight million, six hundred twenty-nine thousand, six hundred fifty-three".