2634991 has 2 divisors, whose sum is σ = 2634992. Its totient is φ = 2634990.

The previous prime is 2634967. The next prime is 2635007. The reversal of 2634991 is 1994362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2634991 - 2⁹ = 2634479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2634941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1317495 + 1317496.

It is an arithmetic number, because the mean of its divisors is an integer number (1317496).

2^2634991 is an apocalyptic number.

2634991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2634991 is an equidigital number, since it uses as much as digits as its factorization.

2634991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 2634991 is about 1623.2655358875. The cubic root of 2634991 is about 138.1209993859.

The spelling of 2634991 in words is "two million, six hundred thirty-four thousand, nine hundred ninety-one".