26985647 has 16 divisors (see below), whose sum is σ = 32114880. Its totient is φ = 22420992.

The previous prime is 26985619. The next prime is 26985659. The reversal of 26985647 is 74658962.

It is a cyclic number.

It is not a de Polignac number, because 26985647 - 2⁶ = 26985583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26985677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2429 + ... + 7737.

It is an arithmetic number, because the mean of its divisors is an integer number (2007180).

Almost surely, 2^26985647 is an apocalyptic number.

26985647 is a deficient number, since it is larger than the sum of its proper divisors (5129233).

26985647 is a wasteful number, since it uses less digits than its factorization.

26985647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362.

The product of its digits is 725760, while the sum is 47.

The square root of 26985647 is about 5194.7711210408. The cubic root of 26985647 is about 299.9468313183.

The spelling of 26985647 in words is "twenty-six million, nine hundred eighty-five thousand, six hundred forty-seven".