724782889 has 2 divisors, whose sum is σ = 724782890. Its totient is φ = 724782888.

The previous prime is 724782869. The next prime is 724782901. The reversal of 724782889 is 988287427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 723610000 + 1172889 = 26900^2 + 1083^2 .

It is a cyclic number.

It is not a de Polignac number, because 724782889 - 2¹⁵ = 724750121 is a prime.

It is not a weakly prime, because it can be changed into another prime (724782829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362391444 + 362391445.

It is an arithmetic number, because the mean of its divisors is an integer number (362391445).

Almost surely, 2^724782889 is an apocalyptic number.

It is an amenable number.

724782889 is a deficient number, since it is larger than the sum of its proper divisors (1).

724782889 is an equidigital number, since it uses as much as digits as its factorization.

724782889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 55.

The square root of 724782889 is about 26921.7920837377. The cubic root of 724782889 is about 898.2612062002.

The spelling of 724782889 in words is "seven hundred twenty-four million, seven hundred eighty-two thousand, eight hundred eighty-nine".