26690969 has 8 divisors (see below), whose sum is σ = 29173248. Its totient is φ = 24310080.

The previous prime is 26690947. The next prime is 26690981. The reversal of 26690969 is 96909662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26690969 - 2²⁴ = 9913753 is a prime.

It is a super-2 number, since 2×26690969² = 1424815652317922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26690929) 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 7 ways as a sum of consecutive naturals, for example, 24797 + ... + 25850.

It is an arithmetic number, because the mean of its divisors is an integer number (3646656).

Almost surely, 2^26690969 is an apocalyptic number.

It is an amenable number.

26690969 is a deficient number, since it is larger than the sum of its proper divisors (2482279).

26690969 is a wasteful number, since it uses less digits than its factorization.

26690969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50695.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 26690969 is about 5166.3303223855. The cubic root of 26690969 is about 298.8510460409.

The spelling of 26690969 in words is "twenty-six million, six hundred ninety thousand, nine hundred sixty-nine".