861674 has 16 divisors (see below), whose sum is σ = 1438560. Its totient is φ = 383760.

The previous prime is 861659. The next prime is 861691. The reversal of 861674 is 476168.

It is a self number, because there is not a number n which added to its sum of digits gives 861674.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797 + ... + 1535.

It is an arithmetic number, because the mean of its divisors is an integer number (89910).

2⁸⁶¹⁶⁷⁴ is an apocalyptic number.

861674 is a deficient number, since it is larger than the sum of its proper divisors (576886).

861674 is a wasteful number, since it uses less digits than its factorization.

861674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805.

The product of its digits is 8064, while the sum is 32.

The square root of 861674 is about 928.2639710772. The cubic root of 861674 is about 95.1585165165.

The spelling of 861674 in words is "eight hundred sixty-one thousand, six hundred seventy-four".