26985587 has 2 divisors, whose sum is σ = 26985588. Its totient is φ = 26985586.

The previous prime is 26985583. The next prime is 26985619. The reversal of 26985587 is 78558962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26985587 - 2² = 26985583 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26985583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13492793 + 13492794.

It is an arithmetic number, because the mean of its divisors is an integer number (13492794).

Almost surely, 2^26985587 is an apocalyptic number.

26985587 is a deficient number, since it is larger than the sum of its proper divisors (1).

26985587 is an equidigital number, since it uses as much as digits as its factorization.

26985587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 50.

The square root of 26985587 is about 5194.7653459998. The cubic root of 26985587 is about 299.9466090171.

It can be divided in two parts, 26985 and 587, that added together give a palindrome (27572).

The spelling of 26985587 in words is "twenty-six million, nine hundred eighty-five thousand, five hundred eighty-seven".