723884570861 has 2 divisors, whose sum is σ = 723884570862. Its totient is φ = 723884570860.

The previous prime is 723884570833. The next prime is 723884570887. The reversal of 723884570861 is 168075488327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 503354775625 + 220529795236 = 709475^2 + 469606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-723884570861 is a prime.

It is a super-2 number, since 2×723884570861² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 723884570861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (723884570821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361942285430 + 361942285431.

It is an arithmetic number, because the mean of its divisors is an integer number (361942285431).

Almost surely, 2^723884570861 is an apocalyptic number.

It is an amenable number.

723884570861 is a deficient number, since it is larger than the sum of its proper divisors (1).

723884570861 is an equidigital number, since it uses as much as digits as its factorization.

723884570861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18063360, while the sum is 59.

The spelling of 723884570861 in words is "seven hundred twenty-three billion, eight hundred eighty-four million, five hundred seventy thousand, eight hundred sixty-one".