10997791 has 4 divisors (see below), whose sum is σ = 12568912. Its totient is φ = 9426672.

The previous prime is 10997771. The next prime is 10997797. The reversal of 10997791 is 19779901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19779901 = 1217 ⋅16253.

It is a cyclic number.

It is not a de Polignac number, because 10997791 - 2⁹ = 10997279 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 (10997797) 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, 785550 + ... + 785563.

It is an arithmetic number, because the mean of its divisors is an integer number (3142228).

Almost surely, 2^10997791 is an apocalyptic number.

10997791 is a deficient number, since it is larger than the sum of its proper divisors (1571121).

10997791 is an equidigital number, since it uses as much as digits as its factorization.

10997791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571120.

The product of its (nonzero) digits is 35721, while the sum is 43.

The square root of 10997791 is about 3316.2917543546. The cubic root of 10997791 is about 222.3831208723.

The spelling of 10997791 in words is "ten million, nine hundred ninety-seven thousand, seven hundred ninety-one".