3645698 has 12 divisors (see below), whose sum is σ = 6361542. Its totient is φ = 1562400.

The previous prime is 3645683. The next prime is 3645703. The reversal of 3645698 is 8965463.

It can be written as a sum of positive squares in only one way, i.e., 3598609 + 47089 = 1897^2 + 217^2 .

It is a super-2 number, since 2×3645698² = 26582227814408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18503 + ... + 18698.

Almost surely, 2^3645698 is an apocalyptic number.

3645698 is a deficient number, since it is larger than the sum of its proper divisors (2715844).

3645698 is a wasteful number, since it uses less digits than its factorization.

3645698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37217 (or 37210 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 3645698 is about 1909.3711006507. The cubic root of 3645698 is about 153.9076581394.

The spelling of 3645698 in words is "three million, six hundred forty-five thousand, six hundred ninety-eight".