872307881 has 2 divisors, whose sum is σ = 872307882. Its totient is φ = 872307880.

The previous prime is 872307833. The next prime is 872307883. The reversal of 872307881 is 188703278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 609349225 + 262958656 = 24685^2 + 16216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-872307881 is a prime.

It is a super-2 number, since 2×872307881² = 1521842078509420322, which contains 22 as substring.

Together with 872307883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (872307883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436153940 + 436153941.

It is an arithmetic number, because the mean of its divisors is an integer number (436153941).

Almost surely, 2^872307881 is an apocalyptic number.

It is an amenable number.

872307881 is a deficient number, since it is larger than the sum of its proper divisors (1).

872307881 is an equidigital number, since it uses as much as digits as its factorization.

872307881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 44.

The square root of 872307881 is about 29534.8587435254. The cubic root of 872307881 is about 955.4836620635.

The spelling of 872307881 in words is "eight hundred seventy-two million, three hundred seven thousand, eight hundred eighty-one".