10405643 has 8 divisors (see below), whose sum is σ = 10644480. Its totient is φ = 10169640.

The previous prime is 10405631. The next prime is 10405651. The reversal of 10405643 is 34650401.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 10405643 - 2⁶ = 10405579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10405663) 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 in 7 ways as a sum of consecutive naturals, for example, 7838 + ... + 9068.

It is an arithmetic number, because the mean of its divisors is an integer number (1330560).

Almost surely, 2^10405643 is an apocalyptic number.

10405643 is a deficient number, since it is larger than the sum of its proper divisors (238837).

10405643 is a wasteful number, since it uses less digits than its factorization.

10405643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 10405643 is about 3225.7778906800. Note that the first 3 decimals coincide. The cubic root of 10405643 is about 218.3180485127.

The spelling of 10405643 in words is "ten million, four hundred five thousand, six hundred forty-three".