8712166731 has 4 divisors (see below), whose sum is σ = 11616222312. Its totient is φ = 5808111152.

The previous prime is 8712166717. The next prime is 8712166751. The reversal of 8712166731 is 1376612178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8712166731 - 2⁵ = 8712166699 is a prime.

It is a super-2 number, since 2×8712166731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8712166751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1452027786 + ... + 1452027791.

It is an arithmetic number, because the mean of its divisors is an integer number (2904055578).

Almost surely, 2^8712166731 is an apocalyptic number.

8712166731 is a deficient number, since it is larger than the sum of its proper divisors (2904055581).

8712166731 is a wasteful number, since it uses less digits than its factorization.

8712166731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904055580.

The product of its digits is 84672, while the sum is 42.

The square root of 8712166731 is about 93338.9882685687. The cubic root of 8712166731 is about 2057.6684220642.

The spelling of 8712166731 in words is "eight billion, seven hundred twelve million, one hundred sixty-six thousand, seven hundred thirty-one".