871845746 has 4 divisors (see below), whose sum is σ = 1307768622. Its totient is φ = 435922872.

The previous prime is 871845743. The next prime is 871845749. The reversal of 871845746 is 647548178.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (871845743) and next prime (871845749).

It can be written as a sum of positive squares in only one way, i.e., 766680721 + 105165025 = 27689^2 + 10255^2 .

It is a junction number, because it is equal to n+sod(n) for n = 871845694 and 871845703.

It is not an unprimeable number, because it can be changed into a prime (871845743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217961435 + ... + 217961438.

Almost surely, 2^871845746 is an apocalyptic number.

871845746 is a deficient number, since it is larger than the sum of its proper divisors (435922876).

871845746 is a wasteful number, since it uses less digits than its factorization.

871845746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435922875.

The product of its digits is 1505280, while the sum is 50.

The square root of 871845746 is about 29527.0341551603. The cubic root of 871845746 is about 955.3148988502.

The spelling of 871845746 in words is "eight hundred seventy-one million, eight hundred forty-five thousand, seven hundred forty-six".