774391 has 4 divisors (see below), whose sum is σ = 776152. Its totient is φ = 772632.

The previous prime is 774377. The next prime is 774427. The reversal of 774391 is 193477.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 774391 - 2⁹ = 773879 is a prime.

It is a pancake number, because a pancake can be divided into 774391 parts by 1244 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436 + ... + 1318.

It is an arithmetic number, because the mean of its divisors is an integer number (194038).

2⁷⁷⁴³⁹¹ is an apocalyptic number.

774391 is a deficient number, since it is larger than the sum of its proper divisors (1761).

774391 is an equidigital number, since it uses as much as digits as its factorization.

774391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760.

The product of its digits is 5292, while the sum is 31.

The square root of 774391 is about 879.9948863488. The cubic root of 774391 is about 91.8304612357.

The spelling of 774391 in words is "seven hundred seventy-four thousand, three hundred ninety-one".