2633661 has 16 divisors (see below), whose sum is σ = 4072320. Its totient is φ = 1679040.

The previous prime is 2633651. The next prime is 2633663. The reversal of 2633661 is 1663362.

It is not a de Polignac number, because 2633661 - 2⁵ = 2633629 is a prime.

It is a super-3 number, since 3×2633661³ = 54802563332444351343, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2633663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1500 + ... + 2741.

It is an arithmetic number, because the mean of its divisors is an integer number (254520).

2^2633661 is an apocalyptic number.

It is an amenable number.

2633661 is a deficient number, since it is larger than the sum of its proper divisors (1438659).

2633661 is a wasteful number, since it uses less digits than its factorization.

2633661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4273 (or 4267 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 2633661 is about 1622.8558161463. The cubic root of 2633661 is about 138.0977568214.

Subtracting from 2633661 its reverse (1663362), we obtain a cube (970299 = 99³).

The spelling of 2633661 in words is "two million, six hundred thirty-three thousand, six hundred sixty-one".