996720686 has 16 divisors (see below), whose sum is σ = 1680092064. Its totient is φ = 440023584.

The previous prime is 996720679. The next prime is 996720707. The reversal of 996720686 is 686027699.

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, 832781 + ... + 833976.

It is an arithmetic number, because the mean of its divisors is an integer number (105005754).

Almost surely, 2^996720686 is an apocalyptic number.

996720686 is a deficient number, since it is larger than the sum of its proper divisors (683371378).

996720686 is a wasteful number, since it uses less digits than its factorization.

996720686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666795.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 996720686 is about 31570.8835163034. The cubic root of 996720686 is about 998.9056982739.

The spelling of 996720686 in words is "nine hundred ninety-six million, seven hundred twenty thousand, six hundred eighty-six".