670365 has 12 divisors (see below), whose sum is σ = 1162044. Its totient is φ = 357504.

The previous prime is 670363. The next prime is 670379. The reversal of 670365 is 563076.

It can be written as a sum of positive squares in 2 ways, for example, as 459684 + 210681 = 678^2 + 459^2 .

It is not a de Polignac number, because 670365 - 2¹ = 670363 is a prime.

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

670365 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 670365.

It is not an unprimeable number, because it can be changed into a prime (670363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7404 + ... + 7493.

It is an arithmetic number, because the mean of its divisors is an integer number (96837).

2⁶⁷⁰³⁶⁵ is an apocalyptic number.

It is an amenable number.

670365 is a deficient number, since it is larger than the sum of its proper divisors (491679).

670365 is a wasteful number, since it uses less digits than its factorization.

670365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14908 (or 14905 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 670365 is about 818.7582060657. The cubic root of 670365 is about 87.5192882648.

It can be divided in two parts, 670 and 365, that added together give a triangular number (1035 = T₄₅).

The spelling of 670365 in words is "six hundred seventy thousand, three hundred sixty-five".