26997705 has 80 divisors (see below), whose sum is σ = 56453760. Its totient is φ = 12089088.

The previous prime is 26997701. The next prime is 26997709. The reversal of 26997705 is 50779962.

It is an interprime number because it is at equal distance from previous prime (26997701) and next prime (26997709).

It is not a de Polignac number, because 26997705 - 2² = 26997701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (26997701) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 252262 + ... + 252368.

It is an arithmetic number, because the mean of its divisors is an integer number (705672).

Almost surely, 2^26997705 is an apocalyptic number.

It is an amenable number.

26997705 is an abundant number, since it is smaller than the sum of its proper divisors (29456055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26997705 is a wasteful number, since it uses less digits than its factorization.

26997705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 26997705 is about 5195.9315815357. The cubic root of 26997705 is about 299.9914997592.

It can be divided in two parts, 2699 and 7705, that added together give a square (10404 = 102²).

The spelling of 26997705 in words is "twenty-six million, nine hundred ninety-seven thousand, seven hundred five".