10726991 has 4 divisors (see below), whose sum is σ = 11702184. Its totient is φ = 9751800.

The previous prime is 10726979. The next prime is 10726999. The reversal of 10726991 is 19962701.

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

It is a cyclic number.

It is not a de Polignac number, because 10726991 - 2⁶ = 10726927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10726999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487580 + ... + 487601.

It is an arithmetic number, because the mean of its divisors is an integer number (2925546).

Almost surely, 2^10726991 is an apocalyptic number.

10726991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10726991 is a deficient number, since it is larger than the sum of its proper divisors (975193).

10726991 is an equidigital number, since it uses as much as digits as its factorization.

10726991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975192.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 10726991 is about 3275.2085429786. The cubic root of 10726991 is about 220.5426754298.

The spelling of 10726991 in words is "ten million, seven hundred twenty-six thousand, nine hundred ninety-one".