3215855 has 8 divisors (see below), whose sum is σ = 3963552. Its totient is φ = 2503008.

The previous prime is 3215833. The next prime is 3215879. The reversal of 3215855 is 5585123.

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 3215855 - 2¹⁰ = 3214831 is a prime.

It is a Duffinian number.

It is a congruent 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, 8507 + ... + 8876.

It is an arithmetic number, because the mean of its divisors is an integer number (495444).

Almost surely, 2^3215855 is an apocalyptic number.

3215855 is a deficient number, since it is larger than the sum of its proper divisors (747697).

3215855 is a wasteful number, since it uses less digits than its factorization.

3215855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17425.

The product of its digits is 6000, while the sum is 29.

The square root of 3215855 is about 1793.2805134724. The cubic root of 3215855 is about 147.6042354280.

The spelling of 3215855 in words is "three million, two hundred fifteen thousand, eight hundred fifty-five".