10406665 has 8 divisors (see below), whose sum is σ = 12505608. Its totient is φ = 8313600.

The previous prime is 10406651. The next prime is 10406689. The reversal of 10406665 is 56660401.

10406665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 64009 + 10342656 = 253^2 + 3216^2 .

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

It is not a de Polignac number, because 10406665 - 2⁵ = 10406633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5139 + ... + 6871.

It is an arithmetic number, because the mean of its divisors is an integer number (1563201).

Almost surely, 2^10406665 is an apocalyptic number.

It is an amenable number.

10406665 is a deficient number, since it is larger than the sum of its proper divisors (2098943).

10406665 is a wasteful number, since it uses less digits than its factorization.

10406665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 10406665 is about 3225.9362981931. The cubic root of 10406665 is about 218.3251957161.

The spelling of 10406665 in words is "ten million, four hundred six thousand, six hundred sixty-five".