999603628 has 12 divisors (see below), whose sum is σ = 1789988200. Its totient is φ = 488178432.

The previous prime is 999603617. The next prime is 999603629. The reversal of 999603628 is 826306999.

It is a happy number.

It is a super-2 number, since 2×999603628² = 1998414826221524768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (999603629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905653 + ... + 2905996.

Almost surely, 2^999603628 is an apocalyptic number.

It is an amenable number.

999603628 is a deficient number, since it is larger than the sum of its proper divisors (790384572).

999603628 is a wasteful number, since it uses less digits than its factorization.

999603628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811696 (or 5811694 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 999603628 is about 31616.5087889223. The cubic root of 999603628 is about 999.8678585394.

The spelling of 999603628 in words is "nine hundred ninety-nine million, six hundred three thousand, six hundred twenty-eight".