10991467 has 4 divisors (see below), whose sum is σ = 11225376. Its totient is φ = 10757560.

The previous prime is 10991459. The next prime is 10991471. The reversal of 10991467 is 76419901.

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 10991467 - 2³ = 10991459 is a prime.

It is a super-3 number, since 3×10991467³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10991867) 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, 116884 + ... + 116977.

It is an arithmetic number, because the mean of its divisors is an integer number (2806344).

Almost surely, 2^10991467 is an apocalyptic number.

10991467 is a deficient number, since it is larger than the sum of its proper divisors (233909).

10991467 is an equidigital number, since it uses as much as digits as its factorization.

10991467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233908.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 10991467 is about 3315.3381426334. The cubic root of 10991467 is about 222.3404874470.

The spelling of 10991467 in words is "ten million, nine hundred ninety-one thousand, four hundred sixty-seven".