3215965 has 8 divisors (see below), whose sum is σ = 3873240. Its totient is φ = 2563392.

The previous prime is 3215963. The next prime is 3215977. The reversal of 3215965 is 5695123.

It can be written as a sum of positive squares in 4 ways, for example, as 480249 + 2735716 = 693^2 + 1654^2 .

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 3215965 - 2¹ = 3215963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571 + ... + 2599.

It is an arithmetic number, because the mean of its divisors is an integer number (484155).

Almost surely, 2^3215965 is an apocalyptic number.

It is an amenable number.

3215965 is a deficient number, since it is larger than the sum of its proper divisors (657275).

3215965 is a wasteful number, since it uses less digits than its factorization.

3215965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its digits is 8100, while the sum is 31.

The square root of 3215965 is about 1793.3111832585. The cubic root of 3215965 is about 147.6059183688.

The spelling of 3215965 in words is "three million, two hundred fifteen thousand, nine hundred sixty-five".