999650512 has 40 divisors (see below), whose sum is σ = 2217344192. Its totient is φ = 427680000.

The previous prime is 999650467. The next prime is 999650513. The reversal of 999650512 is 215056999.

It is a super-2 number, since 2×999650512² = 1998602292283724288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999650513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59887 + ... + 74737.

Almost surely, 2^999650512 is an apocalyptic number.

It is an amenable number.

999650512 is an abundant number, since it is smaller than the sum of its proper divisors (1217693680).

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

999650512 is a wasteful number, since it uses less digits than its factorization.

999650512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15467 (or 15461 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 46.

The square root of 999650512 is about 31617.2502283168. The cubic root of 999650512 is about 999.8834904260.

It can be divided in two parts, 999 and 650512, that added together give a triangular number (651511 = T₁₁₄₁).

The spelling of 999650512 in words is "nine hundred ninety-nine million, six hundred fifty thousand, five hundred twelve".