2196657 has 12 divisors (see below), whose sum is σ = 3250884. Its totient is φ = 1428480.

The previous prime is 2196641. The next prime is 2196659. The reversal of 2196657 is 7566912.

It can be written as a sum of positive squares in 2 ways, for example, as 53361 + 2143296 = 231^2 + 1464^2 .

It is not a de Polignac number, because 2196657 - 2⁴ = 2196641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2196659) 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, 2608 + ... + 3345.

It is an arithmetic number, because the mean of its divisors is an integer number (270907).

2^2196657 is an apocalyptic number.

It is an amenable number.

2196657 is a deficient number, since it is larger than the sum of its proper divisors (1054227).

2196657 is a wasteful number, since it uses less digits than its factorization.

2196657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000 (or 5997 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 2196657 is about 1482.1123439200. The cubic root of 2196657 is about 129.9932343619.

The spelling of 2196657 in words is "two million, one hundred ninety-six thousand, six hundred fifty-seven".