716636189 has 4 divisors (see below), whose sum is σ = 716695200. Its totient is φ = 716577180.

The previous prime is 716636153. The next prime is 716636201. The reversal of 716636189 is 981636617.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 981636617 = 13 ⋅75510509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-716636189 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 (716636689) 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, 3857 + ... + 38054.

It is an arithmetic number, because the mean of its divisors is an integer number (179173800).

Almost surely, 2^716636189 is an apocalyptic number.

It is an amenable number.

716636189 is a deficient number, since it is larger than the sum of its proper divisors (59011).

716636189 is a wasteful number, since it uses less digits than its factorization.

716636189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59010.

The product of its digits is 326592, while the sum is 47.

The square root of 716636189 is about 26770.0614306355. The cubic root of 716636189 is about 894.8829737857.

The spelling of 716636189 in words is "seven hundred sixteen million, six hundred thirty-six thousand, one hundred eighty-nine".