990625056 has 48 divisors (see below), whose sum is σ = 2660876064. Its totient is φ = 322527744.

The previous prime is 990625033. The next prime is 990625073. The reversal of 990625056 is 650526099.

990625056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 990624999 and 990625017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115861 + ... + 124116.

It is an arithmetic number, because the mean of its divisors is an integer number (55434918).

Almost surely, 2^990625056 is an apocalyptic number.

990625056 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

990625056 is an abundant number, since it is smaller than the sum of its proper divisors (1670251008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990625056 is a wasteful number, since it uses less digits than its factorization.

990625056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240033 (or 240025 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 990625056 is about 31474.1966696531. The cubic root of 990625056 is about 996.8652019765.

The spelling of 990625056 in words is "nine hundred ninety million, six hundred twenty-five thousand, fifty-six".