715128791 has 8 divisors (see below), whose sum is σ = 772154880. Its totient is φ = 658390752.

The previous prime is 715128787. The next prime is 715128809. The reversal of 715128791 is 197821517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 715128791 - 2² = 715128787 is a prime.

It is a super-2 number, since 2×715128791² = 1022818375434243362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (715128731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66836 + ... + 76793.

It is an arithmetic number, because the mean of its divisors is an integer number (96519360).

Almost surely, 2^715128791 is an apocalyptic number.

715128791 is a deficient number, since it is larger than the sum of its proper divisors (57026089).

715128791 is a wasteful number, since it uses less digits than its factorization.

715128791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144025.

The product of its digits is 35280, while the sum is 41.

The square root of 715128791 is about 26741.8920609593. The cubic root of 715128791 is about 894.2550904708.

The spelling of 715128791 in words is "seven hundred fifteen million, one hundred twenty-eight thousand, seven hundred ninety-one".