1061665 has 16 divisors (see below), whose sum is σ = 1411200. Its totient is φ = 760320.

The previous prime is 1061651. The next prime is 1061677. The reversal of 1061665 is 5661601.

It is not a de Polignac number, because 1061665 - 2¹⁷ = 930593 is a prime.

It is a super-2 number, since 2×1061665² = 2254265144450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5236 + ... + 5434.

It is an arithmetic number, because the mean of its divisors is an integer number (88200).

2^1061665 is an apocalyptic number.

It is an amenable number.

1061665 is a deficient number, since it is larger than the sum of its proper divisors (349535).

1061665 is a wasteful number, since it uses less digits than its factorization.

1061665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312.

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

The square root of 1061665 is about 1030.3712923020. The cubic root of 1061665 is about 102.0146397031.

It can be divided in two parts, 106 and 1665, that added together give a palindrome (1771).

The spelling of 1061665 in words is "one million, sixty-one thousand, six hundred sixty-five".