724673189 has 2 divisors, whose sum is σ = 724673190. Its totient is φ = 724673188.

The previous prime is 724673149. The next prime is 724673353. The reversal of 724673189 is 981376427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 717329089 + 7344100 = 26783^2 + 2710^2 .

It is an emirp because it is prime and its reverse (981376427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 724673189 - 2⁸ = 724672933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (724673149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362336594 + 362336595.

It is an arithmetic number, because the mean of its divisors is an integer number (362336595).

Almost surely, 2^724673189 is an apocalyptic number.

It is an amenable number.

724673189 is a deficient number, since it is larger than the sum of its proper divisors (1).

724673189 is an equidigital number, since it uses as much as digits as its factorization.

724673189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 724673189 is about 26919.7546236960. The cubic root of 724673189 is about 898.2158849380.

The spelling of 724673189 in words is "seven hundred twenty-four million, six hundred seventy-three thousand, one hundred eighty-nine".