870992 has 10 divisors (see below), whose sum is σ = 1687578. Its totient is φ = 435488.

The previous prime is 870983. The next prime is 870997. The reversal of 870992 is 299078.

It can be written as a sum of positive squares in only one way, i.e., 583696 + 287296 = 764^2 + 536^2 .

It is a plaindrome in base 9.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 870992.

It is not an unprimeable number, because it can be changed into a prime (870997) by changing a digit.

870992 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27203 + ... + 27234.

2⁸⁷⁰⁹⁹² is an apocalyptic number.

It is an amenable number.

870992 is a deficient number, since it is larger than the sum of its proper divisors (816586).

870992 is a wasteful number, since it uses less digits than its factorization.

870992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54445 (or 54439 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 870992 is about 933.2695216281. The cubic root of 870992 is about 95.5002969573.

The spelling of 870992 in words is "eight hundred seventy thousand, nine hundred ninety-two".