999603612 has 48 divisors (see below), whose sum is σ = 2961790720. Its totient is φ = 285600816.

The previous prime is 999603607. The next prime is 999603613. The reversal of 999603612 is 216306999.

It is a happy number.

It is a super-2 number, since 2×999603612² = 1998414762246893088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999603613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660358 + ... + 661869.

Almost surely, 2^999603612 is an apocalyptic number.

It is an amenable number.

999603612 is an abundant number, since it is smaller than the sum of its proper divisors (1962187108).

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

999603612 is a wasteful number, since it uses less digits than its factorization.

999603612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322247 (or 1322239 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 999603612 is about 31616.5085358899. The cubic root of 999603612 is about 999.8678532047.

The spelling of 999603612 in words is "nine hundred ninety-nine million, six hundred three thousand, six hundred twelve".