1766241 has 9 divisors (see below), whose sum is σ = 2557009. Its totient is φ = 1174836.

The previous prime is 1766231. The next prime is 1766243. The reversal of 1766241 is 1426671.

The square root of 1766241 is 1329.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1766241 - 2⁵ = 1766209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1766243) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3766 + ... + 4208.

2^1766241 is an apocalyptic number.

1766241 is the 1329-th square number.

1766241 is the 665-th centered octagonal number.

It is an amenable number.

1766241 is a deficient number, since it is larger than the sum of its proper divisors (790768).

1766241 is an frugal number, since it uses more digits than its factorization.

1766241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 446 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The cubic root of 1766241 is about 120.8787575023.

The spelling of 1766241 in words is "one million, seven hundred sixty-six thousand, two hundred forty-one".