801858 has 16 divisors (see below), whose sum is σ = 1620000. Its totient is φ = 264576.

The previous prime is 801841. The next prime is 801859. The reversal of 801858 is 858108.

It is not an unprimeable number, because it can be changed into a prime (801859) by changing a digit.

801858 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18 + ... + 1266.

It is an arithmetic number, because the mean of its divisors is an integer number (101250).

2⁸⁰¹⁸⁵⁸ is an apocalyptic number.

801858 is an abundant number, since it is smaller than the sum of its proper divisors (818142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

801858 is a wasteful number, since it uses less digits than its factorization.

801858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 801858 is about 895.4652422065. The cubic root of 801858 is about 92.9035883738.

The spelling of 801858 in words is "eight hundred one thousand, eight hundred fifty-eight".