3641965 has 8 divisors (see below), whose sum is σ = 4521240. Its totient is φ = 2812992.

The previous prime is 3641951. The next prime is 3641987. The reversal of 3641965 is 5691463.

It can be written as a sum of positive squares in 4 ways, for example, as 498436 + 3143529 = 706^2 + 1773^2 .

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 3641965 - 2⁵ = 3641933 is a prime.

It is a super-2 number, since 2×3641965² = 26527818122450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3641965.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12414 + ... + 12703.

It is an arithmetic number, because the mean of its divisors is an integer number (565155).

Almost surely, 2^3641965 is an apocalyptic number.

It is an amenable number.

3641965 is a deficient number, since it is larger than the sum of its proper divisors (879275).

3641965 is a wasteful number, since it uses less digits than its factorization.

3641965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25151.

The product of its digits is 19440, while the sum is 34.

The square root of 3641965 is about 1908.3933032790. The cubic root of 3641965 is about 153.8551091261.

The spelling of 3641965 in words is "three million, six hundred forty-one thousand, nine hundred sixty-five".