2633391 has 12 divisors (see below), whose sum is σ = 3945032. Its totient is φ = 1755432.

The previous prime is 2633387. The next prime is 2633399. The reversal of 2633391 is 1933362.

It is not a de Polignac number, because 2633391 - 2² = 2633387 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2633399) 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, 5176 + ... + 5661.

2^2633391 is an apocalyptic number.

2633391 is a deficient number, since it is larger than the sum of its proper divisors (1311641).

2633391 is an equidigital number, since it uses as much as digits as its factorization.

2633391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10852 (or 10840 counting only the distinct ones).

The product of its digits is 2916, while the sum is 27.

The square root of 2633391 is about 1622.7726273265. The cubic root of 2633391 is about 138.0930374505.

The spelling of 2633391 in words is "two million, six hundred thirty-three thousand, three hundred ninety-one".