715721443 has 2 divisors, whose sum is σ = 715721444. Its totient is φ = 715721442.

The previous prime is 715721441. The next prime is 715721453. The reversal of 715721443 is 344127517.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 715721443 - 2¹ = 715721441 is a prime.

Together with 715721441, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 715721399 and 715721408.

It is not a weakly prime, because it can be changed into another prime (715721441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357860721 + 357860722.

It is an arithmetic number, because the mean of its divisors is an integer number (357860722).

Almost surely, 2^715721443 is an apocalyptic number.

715721443 is a deficient number, since it is larger than the sum of its proper divisors (1).

715721443 is an equidigital number, since it uses as much as digits as its factorization.

715721443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 715721443 is about 26752.9707322383. The cubic root of 715721443 is about 894.5020556502.

The spelling of 715721443 in words is "seven hundred fifteen million, seven hundred twenty-one thousand, four hundred forty-three".