674365 has 4 divisors (see below), whose sum is σ = 809244. Its totient is φ = 539488.

The previous prime is 674363. The next prime is 674371. The reversal of 674365 is 563476.

674365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 257049 + 417316 = 507^2 + 646^2 .

It is a cyclic number.

It is not a de Polignac number, because 674365 - 2¹ = 674363 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a Duffinian number.

674365 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 674365.

It is not an unprimeable number, because it can be changed into a prime (674363) 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, 67432 + ... + 67441.

It is an arithmetic number, because the mean of its divisors is an integer number (202311).

2⁶⁷⁴³⁶⁵ is an apocalyptic number.

It is an amenable number.

674365 is a deficient number, since it is larger than the sum of its proper divisors (134879).

674365 is a wasteful number, since it uses less digits than its factorization.

674365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134878.

The product of its digits is 15120, while the sum is 31.

The square root of 674365 is about 821.1972966346. The cubic root of 674365 is about 87.6930160900.

Subtracting from 674365 its reverse (563476), we obtain a square (110889 = 333²).

The spelling of 674365 in words is "six hundred seventy-four thousand, three hundred sixty-five".