3215961 has 12 divisors (see below), whose sum is σ = 5308992. Its totient is φ = 1837656.

The previous prime is 3215939. The next prime is 3215963. The reversal of 3215961 is 1695123.

It is not a de Polignac number, because 3215961 - 2⁷ = 3215833 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

3215961 is a lucky number.

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 11 ways as a sum of consecutive naturals, for example, 25461 + ... + 25586.

It is an arithmetic number, because the mean of its divisors is an integer number (442416).

Almost surely, 2^3215961 is an apocalyptic number.

It is an amenable number.

3215961 is a deficient number, since it is larger than the sum of its proper divisors (2093031).

3215961 is a wasteful number, since it uses less digits than its factorization.

3215961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51060 (or 51057 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 3215961 is about 1793.3100680027. The cubic root of 3215961 is about 147.6058571717.

The spelling of 3215961 in words is "three million, two hundred fifteen thousand, nine hundred sixty-one".