1016665 has 8 divisors (see below), whose sum is σ = 1313928. Its totient is φ = 750720.

The previous prime is 1016663. The next prime is 1016681. The reversal of 1016665 is 5666101.

It can be written as a sum of positive squares in 4 ways, for example, as 222784 + 793881 = 472^2 + 891^2 .

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

It is not a de Polignac number, because 1016665 - 2¹ = 1016663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016663) 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 in 7 ways as a sum of consecutive naturals, for example, 7756 + ... + 7885.

It is an arithmetic number, because the mean of its divisors is an integer number (164241).

2^1016665 is an apocalyptic number.

It is an amenable number.

1016665 is a deficient number, since it is larger than the sum of its proper divisors (297263).

1016665 is a wasteful number, since it uses less digits than its factorization.

1016665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15659.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1016665 is about 1008.2980710088. The cubic root of 1016665 is about 100.5524424533.

It can be divided in two parts, 1016 and 665, that added together give a square (1681 = 41²).

The spelling of 1016665 in words is "one million, sixteen thousand, six hundred sixty-five".