872116671 has 4 divisors (see below), whose sum is σ = 1162822232. Its totient is φ = 581411112.

The previous prime is 872116639. The next prime is 872116673. The reversal of 872116671 is 176611278.

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

It is not a de Polignac number, because 872116671 - 2⁵ = 872116639 is a prime.

It is a super-2 number, since 2×872116671² = 1521174975672244482, 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 (872116673) 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, 145352776 + ... + 145352781.

It is an arithmetic number, because the mean of its divisors is an integer number (290705558).

Almost surely, 2^872116671 is an apocalyptic number.

872116671 is a deficient number, since it is larger than the sum of its proper divisors (290705561).

872116671 is a wasteful number, since it uses less digits than its factorization.

872116671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290705560.

The product of its digits is 28224, while the sum is 39.

The square root of 872116671 is about 29531.6215436945. The cubic root of 872116671 is about 955.4138429144.

The spelling of 872116671 in words is "eight hundred seventy-two million, one hundred sixteen thousand, six hundred seventy-one".