715891729 has 4 divisors (see below), whose sum is σ = 818161984. Its totient is φ = 613621476.

The previous prime is 715891691. The next prime is 715891741. The reversal of 715891729 is 927198517.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 715891729 - 2¹³ = 715883537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (715891769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51135117 + ... + 51135130.

It is an arithmetic number, because the mean of its divisors is an integer number (204540496).

Almost surely, 2^715891729 is an apocalyptic number.

It is an amenable number.

715891729 is a deficient number, since it is larger than the sum of its proper divisors (102270255).

715891729 is a wasteful number, since it uses less digits than its factorization.

715891729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102270254.

The product of its digits is 317520, while the sum is 49.

The square root of 715891729 is about 26756.1531054074. The cubic root of 715891729 is about 894.5729906487.

The spelling of 715891729 in words is "seven hundred fifteen million, eight hundred ninety-one thousand, seven hundred twenty-nine".