990888067 has 12 divisors (see below), whose sum is σ = 1091170440. Its totient is φ = 899154048.

The previous prime is 990888023. The next prime is 990888071. The reversal of 990888067 is 760888099.

It is not a de Polignac number, because 990888067 - 2¹⁹ = 990363779 is a prime.

It is a super-2 number, since 2×990888067² = 1963718322645992978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 990887999 and 990888017.

It is not an unprimeable number, because it can be changed into a prime (990888007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39718 + ... + 59659.

It is an arithmetic number, because the mean of its divisors is an integer number (90930870).

Almost surely, 2^990888067 is an apocalyptic number.

990888067 is a deficient number, since it is larger than the sum of its proper divisors (100282373).

990888067 is a wasteful number, since it uses less digits than its factorization.

990888067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99462 (or 99449 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 990888067 is about 31478.3745927264. The cubic root of 990888067 is about 996.9534167563.

The spelling of 990888067 in words is "nine hundred ninety million, eight hundred eighty-eight thousand, sixty-seven".