2656197 has 12 divisors (see below), whose sum is σ = 3969420. Its totient is φ = 1709568.

The previous prime is 2656189. The next prime is 2656207. The reversal of 2656197 is 7916562.

2656197 is a `hidden beast` number, since 2 + 6 + 561 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1572516 + 1083681 = 1254^2 + 1041^2 .

It is not a de Polignac number, because 2656197 - 2³ = 2656189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656117) 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, 4828 + ... + 5349.

It is an arithmetic number, because the mean of its divisors is an integer number (330785).

2^2656197 is an apocalyptic number.

It is an amenable number.

2656197 is a deficient number, since it is larger than the sum of its proper divisors (1313223).

2656197 is a wasteful number, since it uses less digits than its factorization.

2656197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212 (or 10209 counting only the distinct ones).

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

The square root of 2656197 is about 1629.7843415618. The cubic root of 2656197 is about 138.4905353088.

The spelling of 2656197 in words is "two million, six hundred fifty-six thousand, one hundred ninety-seven".