806990 has 32 divisors (see below), whose sum is σ = 1586304. Its totient is φ = 294400.

The previous prime is 806977. The next prime is 806999. The reversal of 806990 is 99608.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 806990.

It is not an unprimeable number, because it can be changed into a prime (806999) 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, 7940 + ... + 8040.

It is an arithmetic number, because the mean of its divisors is an integer number (49572).

2⁸⁰⁶⁹⁹⁰ is an apocalyptic number.

806990 is a deficient number, since it is larger than the sum of its proper divisors (779314).

806990 is a wasteful number, since it uses less digits than its factorization.

806990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 806990 is about 898.3262213695. The cubic root of 806990 is about 93.1013655621.

The spelling of 806990 in words is "eight hundred six thousand, nine hundred ninety".