715562489 has 2 divisors, whose sum is σ = 715562490. Its totient is φ = 715562488.

The previous prime is 715562473. The next prime is 715562503. The reversal of 715562489 is 984265517.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367105600 + 348456889 = 19160^2 + 18667^2 .

It is an emirp because it is prime and its reverse (984265517) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 715562489 - 2⁴ = 715562473 is a prime.

It is not a weakly prime, because it can be changed into another prime (715562459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357781244 + 357781245.

It is an arithmetic number, because the mean of its divisors is an integer number (357781245).

Almost surely, 2^715562489 is an apocalyptic number.

It is an amenable number.

715562489 is a deficient number, since it is larger than the sum of its proper divisors (1).

715562489 is an equidigital number, since it uses as much as digits as its factorization.

715562489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 47.

The square root of 715562489 is about 26749.9997943925. Note that the first 3 decimals coincide. The cubic root of 715562489 is about 894.4358309998.

The spelling of 715562489 in words is "seven hundred fifteen million, five hundred sixty-two thousand, four hundred eighty-nine".