874981 has 4 divisors (see below), whose sum is σ = 896364. Its totient is φ = 853600.

The previous prime is 874967. The next prime is 874987. The reversal of 874981 is 189478.

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

It can be written as a sum of positive squares in 2 ways, for example, as 504100 + 370881 = 710^2 + 609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-874981 is a prime.

It is a super-2 number, since 2×874981² = 1531183500722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

874981 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 874981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874987) 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, 10630 + ... + 10711.

It is an arithmetic number, because the mean of its divisors is an integer number (224091).

2⁸⁷⁴⁹⁸¹ is an apocalyptic number.

It is an amenable number.

874981 is a deficient number, since it is larger than the sum of its proper divisors (21383).

874981 is a wasteful number, since it uses less digits than its factorization.

874981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21382.

The product of its digits is 16128, while the sum is 37.

The square root of 874981 is about 935.4041907112. The cubic root of 874981 is about 95.6458668347.

The spelling of 874981 in words is "eight hundred seventy-four thousand, nine hundred eighty-one".