2261635 has 8 divisors (see below), whose sum is σ = 2728800. Its totient is φ = 1799424.

The previous prime is 2261621. The next prime is 2261639. The reversal of 2261635 is 5361622.

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 2261635 - 2⁵ = 2261603 is a prime.

It is a super-2 number, since 2×2261635² = 10229985746450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261639) 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 in 7 ways as a sum of consecutive naturals, for example, 142 + ... + 2131.

It is an arithmetic number, because the mean of its divisors is an integer number (341100).

2^2261635 is an apocalyptic number.

2261635 is a deficient number, since it is larger than the sum of its proper divisors (467165).

2261635 is a wasteful number, since it uses less digits than its factorization.

2261635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477.

The product of its digits is 2160, while the sum is 25.

The square root of 2261635 is about 1503.8733324320. The cubic root of 2261635 is about 131.2625505761.

The spelling of 2261635 in words is "two million, two hundred sixty-one thousand, six hundred thirty-five".