872916845 has 18 divisors (see below), whose sum is σ = 1067946174. Its totient is φ = 684961920.

The previous prime is 872916827. The next prime is 872916857. The reversal of 872916845 is 548619278.

It can be written as a sum of positive squares in 9 ways, for example, as 676104004 + 196812841 = 26002^2 + 14029^2 .

It is not a de Polignac number, because 872916845 - 2¹⁰ = 872915821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 872916793 and 872916802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4822655 + ... + 4822835.

It is an arithmetic number, because the mean of its divisors is an integer number (59330343).

Almost surely, 2^872916845 is an apocalyptic number.

It is an amenable number.

872916845 is a deficient number, since it is larger than the sum of its proper divisors (195029329).

872916845 is an frugal number, since it uses more digits than its factorization.

872916845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 259 counting only the distinct ones).

The product of its digits is 967680, while the sum is 50.

The square root of 872916845 is about 29545.1661867047. The cubic root of 872916845 is about 955.7059535345.

The spelling of 872916845 in words is "eight hundred seventy-two million, nine hundred sixteen thousand, eight hundred forty-five".