26632979 has 2 divisors, whose sum is σ = 26632980. Its totient is φ = 26632978.

The previous prime is 26632967. The next prime is 26632981. The reversal of 26632979 is 97923662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26632979 is a prime.

Together with 26632981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26632939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13316489 + 13316490.

It is an arithmetic number, because the mean of its divisors is an integer number (13316490).

Almost surely, 2^26632979 is an apocalyptic number.

26632979 is a deficient number, since it is larger than the sum of its proper divisors (1).

26632979 is an equidigital number, since it uses as much as digits as its factorization.

26632979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 44.

The square root of 26632979 is about 5160.7149698467. The cubic root of 26632979 is about 298.6344566988.

The spelling of 26632979 in words is "twenty-six million, six hundred thirty-two thousand, nine hundred seventy-nine".