3691089 has 10 divisors (see below), whose sum is σ = 5513970. Its totient is φ = 2460672.

The previous prime is 3691087. The next prime is 3691147. The reversal of 3691089 is 9801963.

It can be written as a sum of positive squares in only one way, i.e., 3640464 + 50625 = 1908^2 + 225^2 .

It is not a de Polignac number, because 3691089 - 2¹ = 3691087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3691087) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22704 + ... + 22865.

It is an arithmetic number, because the mean of its divisors is an integer number (551397).

Almost surely, 2^3691089 is an apocalyptic number.

It is an amenable number.

3691089 is a deficient number, since it is larger than the sum of its proper divisors (1822881).

3691089 is an equidigital number, since it uses as much as digits as its factorization.

3691089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45581 (or 45572 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 3691089 is about 1921.2207056973. The cubic root of 3691089 is about 154.5437711781.

It can be divided in two parts, 36 and 91089, that added together give a cube (91125 = 45³).

The spelling of 3691089 in words is "three million, six hundred ninety-one thousand, eighty-nine".