716157493 has 4 divisors (see below), whose sum is σ = 716815008. Its totient is φ = 715499980.

The previous prime is 716157473. The next prime is 716157503. The reversal of 716157493 is 394751617.

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, and also an emirpimes, since its reverse is a distinct semiprime: 394751617 = 13 ⋅30365509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-716157493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (716157413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327121 + ... + 329302.

It is an arithmetic number, because the mean of its divisors is an integer number (179203752).

Almost surely, 2^716157493 is an apocalyptic number.

It is an amenable number.

716157493 is a deficient number, since it is larger than the sum of its proper divisors (657515).

716157493 is a wasteful number, since it uses less digits than its factorization.

716157493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657514.

The product of its digits is 158760, while the sum is 43.

The square root of 716157493 is about 26761.1190535822. The cubic root of 716157493 is about 894.6836758603.

The spelling of 716157493 in words is "seven hundred sixteen million, one hundred fifty-seven thousand, four hundred ninety-three".