26900681 has 4 divisors (see below), whose sum is σ = 28483092. Its totient is φ = 25318272.

The previous prime is 26900677. The next prime is 26900707. The reversal of 26900681 is 18600962.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8761600 + 18139081 = 2960^2 + 4259^2 .

It is a cyclic number.

It is not a de Polignac number, because 26900681 - 2² = 26900677 is a prime.

It is a super-2 number, since 2×26900681² = 1447293276527522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26900611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791180 + ... + 791213.

It is an arithmetic number, because the mean of its divisors is an integer number (7120773).

Almost surely, 2^26900681 is an apocalyptic number.

It is an amenable number.

26900681 is a deficient number, since it is larger than the sum of its proper divisors (1582411).

26900681 is a wasteful number, since it uses less digits than its factorization.

26900681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582410.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 26900681 is about 5186.5866424846. The cubic root of 26900681 is about 299.6316998870.

The spelling of 26900681 in words is "twenty-six million, nine hundred thousand, six hundred eighty-one".