867994 has 8 divisors (see below), whose sum is σ = 1315188. Its totient is φ = 429600.

The previous prime is 867991. The next prime is 868019. The reversal of 867994 is 499768.

867994 = 38² + 39² + ... + 138².

It can be written as a sum of positive squares in 2 ways, for example, as 786769 + 81225 = 887^2 + 285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 867994.

It is not an unprimeable number, because it can be changed into a prime (867991) 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, 1947 + ... + 2350.

2⁸⁶⁷⁹⁹⁴ is an apocalyptic number.

867994 is a deficient number, since it is larger than the sum of its proper divisors (447194).

867994 is a wasteful number, since it uses less digits than its factorization.

867994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400.

The product of its digits is 108864, while the sum is 43.

The square root of 867994 is about 931.6619558617. The cubic root of 867994 is about 95.3905986601.

The spelling of 867994 in words is "eight hundred sixty-seven thousand, nine hundred ninety-four".