805988 has 6 divisors (see below), whose sum is σ = 1410486. Its totient is φ = 402992.

The previous prime is 805967. The next prime is 805991. The reversal of 805988 is 889508.

It can be written as a sum of positive squares in only one way, i.e., 605284 + 200704 = 778^2 + 448^2 .

It is a super-2 number, since 2×805988² = 1299233312288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100745 + ... + 100752.

It is an arithmetic number, because the mean of its divisors is an integer number (235081).

2⁸⁰⁵⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

805988 is a deficient number, since it is larger than the sum of its proper divisors (604498).

805988 is a wasteful number, since it uses less digits than its factorization.

805988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201501 (or 201499 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 805988 is about 897.7683442849. The cubic root of 805988 is about 93.0628164660.

The spelling of 805988 in words is "eight hundred five thousand, nine hundred eighty-eight".