10491623 has 2 divisors, whose sum is σ = 10491624. Its totient is φ = 10491622.

The previous prime is 10491571. The next prime is 10491643. The reversal of 10491623 is 32619401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10491623 - 2¹⁴ = 10475239 is a prime.

It is a super-2 number, since 2×10491623² = 220148306348258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 10491592 and 10491601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10491643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5245811 + 5245812.

It is an arithmetic number, because the mean of its divisors is an integer number (5245812).

Almost surely, 2^10491623 is an apocalyptic number.

10491623 is a deficient number, since it is larger than the sum of its proper divisors (1).

10491623 is an equidigital number, since it uses as much as digits as its factorization.

10491623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 10491623 is about 3239.0774921264. The cubic root of 10491623 is about 218.9177077997.

The spelling of 10491623 in words is "ten million, four hundred ninety-one thousand, six hundred twenty-three".