10626991 has 2 divisors, whose sum is σ = 10626992. Its totient is φ = 10626990.

The previous prime is 10626923. The next prime is 10626997. The reversal of 10626991 is 19962601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10626991 is a prime.

It is a super-2 number, since 2×10626991² = 225865875428162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10626997) 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 as a sum of consecutive naturals, namely, 5313495 + 5313496.

It is an arithmetic number, because the mean of its divisors is an integer number (5313496).

Almost surely, 2^10626991 is an apocalyptic number.

10626991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10626991 is an equidigital number, since it uses as much as digits as its factorization.

10626991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 10626991 is about 3259.9065937539. The cubic root of 10626991 is about 219.8552146528.

The spelling of 10626991 in words is "ten million, six hundred twenty-six thousand, nine hundred ninety-one".