11016991 has 4 divisors (see below), whose sum is σ = 11065752. Its totient is φ = 10968232.

The previous prime is 11016989. The next prime is 11017021. The reversal of 11016991 is 19961011.

11016991 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 11016991 - 2¹ = 11016989 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 (11116991) 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, 24040 + ... + 24493.

It is an arithmetic number, because the mean of its divisors is an integer number (2766438).

Almost surely, 2^11016991 is an apocalyptic number.

11016991 is a deficient number, since it is larger than the sum of its proper divisors (48761).

11016991 is an equidigital number, since it uses as much as digits as its factorization.

11016991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48760.

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 11016991 is about 3319.1852916040. The cubic root of 11016991 is about 222.5124581671.

The spelling of 11016991 in words is "eleven million, sixteen thousand, nine hundred ninety-one".