874991 has 4 divisors (see below), whose sum is σ = 942312. Its totient is φ = 807672.

The previous prime is 874987. The next prime is 875011. The reversal of 874991 is 199478.

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

It is a cyclic number.

It is not a de Polignac number, because 874991 - 2² = 874987 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874091) 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, 33641 + ... + 33666.

It is an arithmetic number, because the mean of its divisors is an integer number (235578).

2⁸⁷⁴⁹⁹¹ is an apocalyptic number.

874991 is a deficient number, since it is larger than the sum of its proper divisors (67321).

874991 is a wasteful number, since it uses less digits than its factorization.

874991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67320.

The product of its digits is 18144, while the sum is 38.

The square root of 874991 is about 935.4095359788. The cubic root of 874991 is about 95.6462312064.

The spelling of 874991 in words is "eight hundred seventy-four thousand, nine hundred ninety-one".