774145 has 8 divisors (see below), whose sum is σ = 938304. Its totient is φ = 613104.

The previous prime is 774143. The next prime is 774149. The reversal of 774145 is 541477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 774145 - 2¹ = 774143 is a prime.

It is a Duffinian number.

774145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (774143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189 + ... + 1258.

It is an arithmetic number, because the mean of its divisors is an integer number (117288).

It is a Proth number, since it is equal to 189 ⋅ 2¹² + 1 and 189 < 2¹².

2⁷⁷⁴¹⁴⁵ is an apocalyptic number.

It is an amenable number.

774145 is a deficient number, since it is larger than the sum of its proper divisors (164159).

774145 is a wasteful number, since it uses less digits than its factorization.

774145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559.

The product of its digits is 3920, while the sum is 28.

The square root of 774145 is about 879.8551017071. The cubic root of 774145 is about 91.8207363095.

It can be divided in two parts, 774 and 145, that added together give a palindrome (919).

The spelling of 774145 in words is "seven hundred seventy-four thousand, one hundred forty-five".