999820070 has 8 divisors (see below), whose sum is σ = 1799676144. Its totient is φ = 399928024.

The previous prime is 999820069. The next prime is 999820121. The reversal of 999820070 is 70028999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49990994 + ... + 49991013.

It is an arithmetic number, because the mean of its divisors is an integer number (224959518).

Almost surely, 2^999820070 is an apocalyptic number.

999820070 is a deficient number, since it is larger than the sum of its proper divisors (799856074).

999820070 is a wasteful number, since it uses less digits than its factorization.

999820070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99982014.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 999820070 is about 31619.9315306027. The cubic root of 999820070 is about 999.9400197358.

The spelling of 999820070 in words is "nine hundred ninety-nine million, eight hundred twenty thousand, seventy".