999660496 has 10 divisors (see below), whose sum is σ = 1936842242. Its totient is φ = 499830240.

The previous prime is 999660491. The next prime is 999660499. The reversal of 999660496 is 694066999.

It can be written as a sum of positive squares in only one way, i.e., 558660496 + 441000000 = 23636^2 + 21000^2 .

It is a super-2 number, since 2×999660496² = 1998642214525932032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 999660496.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999660491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31239375 + ... + 31239406.

Almost surely, 2^999660496 is an apocalyptic number.

It is an amenable number.

999660496 is a deficient number, since it is larger than the sum of its proper divisors (937181746).

999660496 is a wasteful number, since it uses less digits than its factorization.

999660496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62478789 (or 62478783 counting only the distinct ones).

The product of its (nonzero) digits is 5668704, while the sum is 58.

The square root of 999660496 is about 31617.4081164159. The cubic root of 999660496 is about 999.8868191906.

The spelling of 999660496 in words is "nine hundred ninety-nine million, six hundred sixty thousand, four hundred ninety-six".