990820707 has 8 divisors (see below), whose sum is σ = 1398805776. Its totient is φ = 621691392.

The previous prime is 990820697. The next prime is 990820781. The reversal of 990820707 is 707028099.

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

It is not a de Polignac number, because 990820707 - 2⁶ = 990820643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (990820907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9713878 + ... + 9713979.

It is an arithmetic number, because the mean of its divisors is an integer number (174850722).

Almost surely, 2^990820707 is an apocalyptic number.

990820707 is a deficient number, since it is larger than the sum of its proper divisors (407985069).

990820707 is a wasteful number, since it uses less digits than its factorization.

990820707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19427877.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 990820707 is about 31477.3046336563. The cubic root of 990820707 is about 996.9308254714.

The spelling of 990820707 in words is "nine hundred ninety million, eight hundred twenty thousand, seven hundred seven".