2633639 has 2 divisors, whose sum is σ = 2633640. Its totient is φ = 2633638.

The previous prime is 2633629. The next prime is 2633641. The reversal of 2633639 is 9363362.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2633639 is a prime.

It is a Sophie Germain prime.

Together with 2633641, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2633629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1316819 + 1316820.

It is an arithmetic number, because the mean of its divisors is an integer number (1316820).

2^2633639 is an apocalyptic number.

2633639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2633639 is an equidigital number, since it uses as much as digits as its factorization.

2633639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 32.

The square root of 2633639 is about 1622.8490379576. The cubic root of 2633639 is about 138.0973722921.

The spelling of 2633639 in words is "two million, six hundred thirty-three thousand, six hundred thirty-nine".