26690685 has 16 divisors (see below), whose sum is σ = 48806016. Its totient is φ = 12201408.

The previous prime is 26690681. The next prime is 26690693. The reversal of 26690685 is 58609662.

It is not a de Polignac number, because 26690685 - 2² = 26690681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26690681) 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, 126994 + ... + 127203.

It is an arithmetic number, because the mean of its divisors is an integer number (3050376).

Almost surely, 2^26690685 is an apocalyptic number.

It is an amenable number.

26690685 is a deficient number, since it is larger than the sum of its proper divisors (22115331).

26690685 is a wasteful number, since it uses less digits than its factorization.

26690685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254212.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 26690685 is about 5166.3028366521. The cubic root of 26690685 is about 298.8499860819.

It can be divided in two parts, 266 and 90685, that added together give a triangular number (90951 = T₄₂₆).

The spelling of 26690685 in words is "twenty-six million, six hundred ninety thousand, six hundred eighty-five".