3660985 has 4 divisors (see below), whose sum is σ = 4393188. Its totient is φ = 2928784.

The previous prime is 3660961. The next prime is 3661019. The reversal of 3660985 is 5890663.

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 1610361 + 2050624 = 1269^2 + 1432^2 .

It is a cyclic number.

It is not a de Polignac number, because 3660985 - 2⁵ = 3660953 is a prime.

It is a super-2 number, since 2×3660985² = 26805622340450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366094 + ... + 366103.

It is an arithmetic number, because the mean of its divisors is an integer number (1098297).

Almost surely, 2^3660985 is an apocalyptic number.

It is an amenable number.

3660985 is a deficient number, since it is larger than the sum of its proper divisors (732203).

3660985 is an equidigital number, since it uses as much as digits as its factorization.

3660985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732202.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 3660985 is about 1913.3700635267. The cubic root of 3660985 is about 154.1224780424.

The spelling of 3660985 in words is "three million, six hundred sixty thousand, nine hundred eighty-five".