10391687 has 2 divisors, whose sum is σ = 10391688. Its totient is φ = 10391686.

The previous prime is 10391677. The next prime is 10391701. The reversal of 10391687 is 78619301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10391687 - 2⁴ = 10391671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10391617) 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, 5195843 + 5195844.

It is an arithmetic number, because the mean of its divisors is an integer number (5195844).

Almost surely, 2^10391687 is an apocalyptic number.

10391687 is a deficient number, since it is larger than the sum of its proper divisors (1).

10391687 is an equidigital number, since it uses as much as digits as its factorization.

10391687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 10391687 is about 3223.6139657223. The cubic root of 10391687 is about 218.2204024617.

The spelling of 10391687 in words is "ten million, three hundred ninety-one thousand, six hundred eighty-seven".