3215897 has 8 divisors (see below), whose sum is σ = 3351240. Its totient is φ = 3082240.

The previous prime is 3215893. The next prime is 3215899. The reversal of 3215897 is 7985123.

It can be written as a sum of positive squares in 4 ways, for example, as 1907161 + 1308736 = 1381^2 + 1144^2 .

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 3215897 - 2² = 3215893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3215893) 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, 4697 + ... + 5337.

It is an arithmetic number, because the mean of its divisors is an integer number (418905).

Almost surely, 2^3215897 is an apocalyptic number.

It is an amenable number.

3215897 is a deficient number, since it is larger than the sum of its proper divisors (135343).

3215897 is a wasteful number, since it uses less digits than its factorization.

3215897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843.

The product of its digits is 15120, while the sum is 35.

The square root of 3215897 is about 1793.2922238163. The cubic root of 3215897 is about 147.6048780100.

The spelling of 3215897 in words is "three million, two hundred fifteen thousand, eight hundred ninety-seven".