1071646 has 16 divisors (see below), whose sum is σ = 1743984. Its totient is φ = 491904.

The previous prime is 1071643. The next prime is 1071659. The reversal of 1071646 is 6461701.

It is a happy number.

It is a super-2 number, since 2×1071646² = 2296850298632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1071646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1096 + ... + 1828.

It is an arithmetic number, because the mean of its divisors is an integer number (108999).

2^1071646 is an apocalyptic number.

1071646 is a deficient number, since it is larger than the sum of its proper divisors (672338).

1071646 is a wasteful number, since it uses less digits than its factorization.

1071646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1071646 is about 1035.2033616638. The cubic root of 1071646 is about 102.3333321544. Note that the first 5 decimals are identical.

The spelling of 1071646 in words is "one million, seventy-one thousand, six hundred forty-six".