3661265 has 8 divisors (see below), whose sum is σ = 4439400. Its totient is φ = 2898432.

The previous prime is 3661249. The next prime is 3661271. The reversal of 3661265 is 5621663.

It can be written as a sum of positive squares in 4 ways, for example, as 781456 + 2879809 = 884^2 + 1697^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3661265 - 2⁴ = 3661249 is a prime.

It is a super-2 number, since 2×3661265² = 26809722800450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3290 + ... + 4259.

It is an arithmetic number, because the mean of its divisors is an integer number (554925).

Almost surely, 2^3661265 is an apocalyptic number.

It is an amenable number.

3661265 is a deficient number, since it is larger than the sum of its proper divisors (778135).

3661265 is an equidigital number, since it uses as much as digits as its factorization.

3661265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651.

The product of its digits is 6480, while the sum is 29.

The square root of 3661265 is about 1913.4432314548. The cubic root of 3661265 is about 154.1264071483.

The spelling of 3661265 in words is "three million, six hundred sixty-one thousand, two hundred sixty-five".