10405691 has 2 divisors, whose sum is σ = 10405692. Its totient is φ = 10405690.

The previous prime is 10405687. The next prime is 10405697. The reversal of 10405691 is 19650401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10405691 - 2² = 10405687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10405691.

It is not a weakly prime, because it can be changed into another prime (10405697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5202845 + 5202846.

It is an arithmetic number, because the mean of its divisors is an integer number (5202846).

Almost surely, 2^10405691 is an apocalyptic number.

10405691 is a deficient number, since it is larger than the sum of its proper divisors (1).

10405691 is an equidigital number, since it uses as much as digits as its factorization.

10405691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 10405691 is about 3225.7853307373. The cubic root of 10405691 is about 218.3183842040.

The spelling of 10405691 in words is "ten million, four hundred five thousand, six hundred ninety-one".