26673991 has 2 divisors, whose sum is σ = 26673992. Its totient is φ = 26673990.

The previous prime is 26673979. The next prime is 26674001. The reversal of 26673991 is 19937662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26673991 - 2¹¹ = 26671943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26673931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13336995 + 13336996.

It is an arithmetic number, because the mean of its divisors is an integer number (13336996).

Almost surely, 2^26673991 is an apocalyptic number.

26673991 is a deficient number, since it is larger than the sum of its proper divisors (1).

26673991 is an equidigital number, since it uses as much as digits as its factorization.

26673991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 43.

The square root of 26673991 is about 5164.6869217795. The cubic root of 26673991 is about 298.7876666851.

The spelling of 26673991 in words is "twenty-six million, six hundred seventy-three thousand, nine hundred ninety-one".