996176977 has 4 divisors (see below), whose sum is σ = 996460596. Its totient is φ = 995893360.

The previous prime is 996176957. The next prime is 996176981. The reversal of 996176977 is 779671699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 779671699 = 29 ⋅26885231.

It can be written as a sum of positive squares in 2 ways, for example, as 381186576 + 614990401 = 19524^2 + 24799^2 .

It is a cyclic number.

It is not a de Polignac number, because 996176977 - 2⁷ = 996176849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996176927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136474 + ... + 143587.

It is an arithmetic number, because the mean of its divisors is an integer number (249115149).

Almost surely, 2^996176977 is an apocalyptic number.

It is an amenable number.

996176977 is a deficient number, since it is larger than the sum of its proper divisors (283619).

996176977 is a wasteful number, since it uses less digits than its factorization.

996176977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283618.

The product of its digits is 9001692, while the sum is 61.

The square root of 996176977 is about 31562.2714169941. The cubic root of 996176977 is about 998.7240315971.

The spelling of 996176977 in words is "nine hundred ninety-six million, one hundred seventy-six thousand, nine hundred seventy-seven".