990005575 has 24 divisors (see below), whose sum is σ = 1323786800. Its totient is φ = 730114560.

The previous prime is 990005563. The next prime is 990005647. The reversal of 990005575 is 575500099.

It is not a de Polignac number, because 990005575 - 2¹⁵ = 989972807 is a prime.

It is a super-2 number, since 2×990005575² = 1960222077062161250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326416 + ... + 329434.

Almost surely, 2^990005575 is an apocalyptic number.

990005575 is a deficient number, since it is larger than the sum of its proper divisors (333781225).

990005575 is a wasteful number, since it uses less digits than its factorization.

990005575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051 (or 4046 counting only the distinct ones).

The product of its (nonzero) digits is 70875, while the sum is 40.

The square root of 990005575 is about 31464.3540375454. The cubic root of 990005575 is about 996.6573642355.

The spelling of 990005575 in words is "nine hundred ninety million, five thousand, five hundred seventy-five".