1066761 has 6 divisors (see below), whose sum is σ = 1540890. Its totient is φ = 711168.

The previous prime is 1066757. The next prime is 1066777. The reversal of 1066761 is 1676601.

It can be written as a sum of positive squares in only one way, i.e., 921600 + 145161 = 960^2 + 381^2 .

It is not a de Polignac number, because 1066761 - 2² = 1066757 is a prime.

It is a super-2 number, since 2×1066761² = 2275958062242, which contains 22 as substring.

1066761 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066721) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 59256 + ... + 59273.

It is an arithmetic number, because the mean of its divisors is an integer number (256815).

2^1066761 is an apocalyptic number.

It is an amenable number.

1066761 is a deficient number, since it is larger than the sum of its proper divisors (474129).

1066761 is a wasteful number, since it uses less digits than its factorization.

1066761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118535 (or 118532 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1066761 is about 1032.8412269076. The cubic root of 1066761 is about 102.1776029188.

The spelling of 1066761 in words is "one million, sixty-six thousand, seven hundred sixty-one".