26321663 has 2 divisors, whose sum is σ = 26321664. Its totient is φ = 26321662.

The previous prime is 26321657. The next prime is 26321671. The reversal of 26321663 is 36612362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26321663 - 2⁶ = 26321599 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26321623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13160831 + 13160832.

It is an arithmetic number, because the mean of its divisors is an integer number (13160832).

Almost surely, 2^26321663 is an apocalyptic number.

26321663 is a deficient number, since it is larger than the sum of its proper divisors (1).

26321663 is an equidigital number, since it uses as much as digits as its factorization.

26321663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 29.

The square root of 26321663 is about 5130.4642090166. The cubic root of 26321663 is about 297.4663022350.

The spelling of 26321663 in words is "twenty-six million, three hundred twenty-one thousand, six hundred sixty-three".