999340656 has 40 divisors (see below), whose sum is σ = 2590984464. Its totient is φ = 331906560.

The previous prime is 999340619. The next prime is 999340673. The reversal of 999340656 is 656043999.

It is a happy number.

999340656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 999340599 and 999340608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24285 + ... + 50876.

Almost surely, 2^999340656 is an apocalyptic number.

It is an amenable number.

999340656 is an abundant number, since it is smaller than the sum of its proper divisors (1591643808).

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

999340656 is a wasteful number, since it uses less digits than its factorization.

999340656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75449 (or 75443 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 51.

The square root of 999340656 is about 31612.3497386702. The cubic root of 999340656 is about 999.7801703451.

The spelling of 999340656 in words is "nine hundred ninety-nine million, three hundred forty thousand, six hundred fifty-six".