996999977 has 8 divisors (see below), whose sum is σ = 1050806400. Its totient is φ = 943326864.

The previous prime is 996999973. The next prime is 996999989. The reversal of 996999977 is 779999699.

996999977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 996999977 - 2² = 996999973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (996999973) 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, 17777 + ... + 48062.

It is an arithmetic number, because the mean of its divisors is an integer number (131350800).

Almost surely, 2^996999977 is an apocalyptic number.

It is an amenable number.

996999977 is a deficient number, since it is larger than the sum of its proper divisors (53806423).

996999977 is a wasteful number, since it uses less digits than its factorization.

996999977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66655.

The product of its digits is 156243654, while the sum is 74.

The square root of 996999977 is about 31575.3064434852. The cubic root of 996999977 is about 998.9989906480.

The spelling of 996999977 in words is "nine hundred ninety-six million, nine hundred ninety-nine thousand, nine hundred seventy-seven".