872331641 has 2 divisors, whose sum is σ = 872331642. Its totient is φ = 872331640.

The previous prime is 872331547. The next prime is 872331653. The reversal of 872331641 is 146133278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 738698041 + 133633600 = 27179^2 + 11560^2 .

It is a cyclic number.

It is not a de Polignac number, because 872331641 - 2²² = 868137337 is a prime.

It is a Chen prime.

It is equal to p_44667107 and since 872331641 and 44667107 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (872331241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436165820 + 436165821.

It is an arithmetic number, because the mean of its divisors is an integer number (436165821).

Almost surely, 2^872331641 is an apocalyptic number.

It is an amenable number.

872331641 is a deficient number, since it is larger than the sum of its proper divisors (1).

872331641 is an equidigital number, since it uses as much as digits as its factorization.

872331641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 872331641 is about 29535.2609773471. The cubic root of 872331641 is about 955.4923371678.

The spelling of 872331641 in words is "eight hundred seventy-two million, three hundred thirty-one thousand, six hundred forty-one".