10622991 has 8 divisors (see below), whose sum is σ = 14202880. Its totient is φ = 7062552.

The previous prime is 10622933. The next prime is 10623007. The reversal of 10622991 is 19922601.

It is a happy number.

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

It is not a de Polignac number, because 10622991 - 2¹⁰ = 10621967 is a prime.

It is a super-2 number, since 2×10622991² = 225695875572162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10622191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3535 + ... + 5808.

It is an arithmetic number, because the mean of its divisors is an integer number (1775360).

Almost surely, 2^10622991 is an apocalyptic number.

10622991 is a deficient number, since it is larger than the sum of its proper divisors (3579889).

10622991 is an equidigital number, since it uses as much as digits as its factorization.

10622991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9725.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 10622991 is about 3259.2930215002. The cubic root of 10622991 is about 219.8276266862.

The spelling of 10622991 in words is "ten million, six hundred twenty-two thousand, nine hundred ninety-one".