2261656 has 8 divisors (see below), whose sum is σ = 4240620. Its totient is φ = 1130824.

The previous prime is 2261653. The next prime is 2261689. The reversal of 2261656 is 6561622.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141346 + ... + 141361.

2^2261656 is an apocalyptic number.

It is an amenable number.

2261656 is a deficient number, since it is larger than the sum of its proper divisors (1978964).

2261656 is a wasteful number, since it uses less digits than its factorization.

2261656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282713 (or 282709 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 2261656 is about 1503.8803143868. The cubic root of 2261656 is about 131.2629568463.

The spelling of 2261656 in words is "two million, two hundred sixty-one thousand, six hundred fifty-six".