801669 has 16 divisors (see below), whose sum is σ = 1235520. Its totient is φ = 456960.

The previous prime is 801641. The next prime is 801677. The reversal of 801669 is 966108.

801669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 801669 - 2¹¹ = 799621 is a prime.

It is a super-2 number, since 2×801669² = 1285346371122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (77220).

2⁸⁰¹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

801669 is a deficient number, since it is larger than the sum of its proper divisors (433851).

801669 is a wasteful number, since it uses less digits than its factorization.

801669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 801669 is about 895.3597042530. The cubic root of 801669 is about 92.8962885951.

The spelling of 801669 in words is "eight hundred one thousand, six hundred sixty-nine".