874721 has 2 divisors, whose sum is σ = 874722. Its totient is φ = 874720.

The previous prime is 874711. The next prime is 874723. The reversal of 874721 is 127478.

874721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819025 + 55696 = 905^2 + 236^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-874721 is a prime.

It is a Sophie Germain prime.

Together with 874723, it forms a pair of twin primes.

It is a Chen prime.

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

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 874721.

It is not a weakly prime, because it can be changed into another prime (874723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437360 + 437361.

It is an arithmetic number, because the mean of its divisors is an integer number (437361).

2⁸⁷⁴⁷²¹ is an apocalyptic number.

It is an amenable number.

874721 is a deficient number, since it is larger than the sum of its proper divisors (1).

874721 is an equidigital number, since it uses as much as digits as its factorization.

874721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 29.

The square root of 874721 is about 935.2652030307. The cubic root of 874721 is about 95.6363921951.

The spelling of 874721 in words is "eight hundred seventy-four thousand, seven hundred twenty-one".