861337 has 4 divisors (see below), whose sum is σ = 872320. Its totient is φ = 850356.

The previous prime is 861317. The next prime is 861347. The reversal of 861337 is 733168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 861337 - 2¹⁹ = 337049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5373 + ... + 5530.

It is an arithmetic number, because the mean of its divisors is an integer number (218080).

2⁸⁶¹³³⁷ is an apocalyptic number.

It is an amenable number.

861337 is a deficient number, since it is larger than the sum of its proper divisors (10983).

861337 is a wasteful number, since it uses less digits than its factorization.

861337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10982.

The product of its digits is 3024, while the sum is 28.

The square root of 861337 is about 928.0824316837. The cubic root of 861337 is about 95.1461094261.

The spelling of 861337 in words is "eight hundred sixty-one thousand, three hundred thirty-seven".