801667 has 4 divisors (see below), whose sum is σ = 843880. Its totient is φ = 759456.

The previous prime is 801641. The next prime is 801677. The reversal of 801667 is 766108.

801667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 801667 - 2⁷ = 801539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21078 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (210970).

2⁸⁰¹⁶⁶⁷ is an apocalyptic number.

801667 is a deficient number, since it is larger than the sum of its proper divisors (42213).

801667 is a wasteful number, since it uses less digits than its factorization.

801667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42212.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 801667 is about 895.3585873827. The cubic root of 801667 is about 92.8962113426.

The spelling of 801667 in words is "eight hundred one thousand, six hundred sixty-seven".