26705997 has 32 divisors (see below), whose sum is σ = 42456960. Its totient is φ = 16531200.

The previous prime is 26705977. The next prime is 26706019. The reversal of 26705997 is 79950762.

It is not a de Polignac number, because 26705997 - 2¹⁴ = 26689613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26705957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37747 + ... + 38447.

It is an arithmetic number, because the mean of its divisors is an integer number (1326780).

Almost surely, 2^26705997 is an apocalyptic number.

26705997 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

26705997 is a deficient number, since it is larger than the sum of its proper divisors (15750963).

26705997 is a wasteful number, since it uses less digits than its factorization.

26705997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 804 counting only the distinct ones).

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

The square root of 26705997 is about 5167.7845349821. The cubic root of 26705997 is about 298.9071235715.

The spelling of 26705997 in words is "twenty-six million, seven hundred five thousand, nine hundred ninety-seven".