774381 has 4 divisors (see below), whose sum is σ = 1032512. Its totient is φ = 516252.

The previous prime is 774377. The next prime is 774427. The reversal of 774381 is 183477.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 774381 - 2² = 774377 is a prime.

It is a super-2 number, since 2×774381² = 1199331866322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

774381 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 774381.

It is not an unprimeable number, because it can be changed into a prime (774181) 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, 129061 + ... + 129066.

It is an arithmetic number, because the mean of its divisors is an integer number (258128).

2⁷⁷⁴³⁸¹ is an apocalyptic number.

It is an amenable number.

774381 is a deficient number, since it is larger than the sum of its proper divisors (258131).

774381 is a wasteful number, since it uses less digits than its factorization.

774381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258130.

The product of its digits is 4704, while the sum is 30.

The square root of 774381 is about 879.9892044792. The cubic root of 774381 is about 91.8300659537.

The spelling of 774381 in words is "seven hundred seventy-four thousand, three hundred eighty-one".