990006608 has 10 divisors (see below), whose sum is σ = 1918137834. Its totient is φ = 495003296.

The previous prime is 990006601. The next prime is 990006629. The reversal of 990006608 is 806600099.

It can be written as a sum of positive squares in only one way, i.e., 880427584 + 109579024 = 29672^2 + 10468^2 .

It is a super-2 number, since 2×990006608² = 1960226167767331328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990006601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30937691 + ... + 30937722.

Almost surely, 2^990006608 is an apocalyptic number.

It is an amenable number.

990006608 is a deficient number, since it is larger than the sum of its proper divisors (928131226).

990006608 is a wasteful number, since it uses less digits than its factorization.

990006608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61875421 (or 61875415 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 990006608 is about 31464.3704529425. The cubic root of 990006608 is about 996.6577108822.

The spelling of 990006608 in words is "nine hundred ninety million, six thousand, six hundred eight".