999670 has 16 divisors (see below), whose sum is σ = 2056608.
Its totient is φ = 342720.
The previous prime is 999667. The next prime is 999671. The reversal of 999670 is 76999.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (999671) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7071 + ... + 7210.
It is an arithmetic number, because the mean of its divisors is an integer number (128538).
2999670 is an apocalyptic number.
999670 is an abundant number, since it is smaller than the sum of its proper divisors (1056938).
It is a weird number, because it is abundant, but not a pseudoperfect number.
999670 is a wasteful number, since it uses less digits than its factorization.
999670 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14295.
The product of its (nonzero) digits is 30618, while the sum is 40.
The square root of 999670 is about 999.8349863853.
The cubic root of 999670 is about 99.9889987898.
The spelling of 999670 in words is "nine hundred ninety-nine thousand, six hundred seventy".