868402723 has 2 divisors, whose sum is σ = 868402724. Its totient is φ = 868402722.

The previous prime is 868402699. The next prime is 868402727. The reversal of 868402723 is 327204868.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868402723 is a prime.

It is not a weakly prime, because it can be changed into another prime (868402727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434201361 + 434201362.

It is an arithmetic number, because the mean of its divisors is an integer number (434201362).

Almost surely, 2^868402723 is an apocalyptic number.

868402723 is a deficient number, since it is larger than the sum of its proper divisors (1).

868402723 is an equidigital number, since it uses as much as digits as its factorization.

868402723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 868402723 is about 29468.6735873877. The cubic root of 868402723 is about 954.0556889173.

The spelling of 868402723 in words is "eight hundred sixty-eight million, four hundred two thousand, seven hundred twenty-three".