3690945 has 12 divisors (see below), whose sum is σ = 6397716. Its totient is φ = 1968480.

The previous prime is 3690941. The next prime is 3690961. The reversal of 3690945 is 5490963.

It can be written as a sum of positive squares in 2 ways, for example, as 2792241 + 898704 = 1671^2 + 948^2 .

It is not a de Polignac number, because 3690945 - 2² = 3690941 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (3690941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40966 + ... + 41055.

It is an arithmetic number, because the mean of its divisors is an integer number (533143).

Almost surely, 2^3690945 is an apocalyptic number.

It is an amenable number.

3690945 is a deficient number, since it is larger than the sum of its proper divisors (2706771).

3690945 is a wasteful number, since it uses less digits than its factorization.

3690945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82032 (or 82029 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 3690945 is about 1921.1832291585. The cubic root of 3690945 is about 154.5417614196.

The spelling of 3690945 in words is "three million, six hundred ninety thousand, nine hundred forty-five".