996977 has 4 divisors (see below), whose sum is σ = 998976. Its totient is φ = 994980.

The previous prime is 996973. The next prime is 996979. The reversal of 996977 is 779699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 996977 - 2² = 996973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (996973) 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, 452 + ... + 1482.

It is an arithmetic number, because the mean of its divisors is an integer number (249744).

2⁹⁹⁶⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

996977 is a deficient number, since it is larger than the sum of its proper divisors (1999).

996977 is a wasteful number, since it uses less digits than its factorization.

996977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998.

The product of its digits is 214326, while the sum is 47.

The square root of 996977 is about 998.4873559540. The cubic root of 996977 is about 99.8991316232.

The spelling of 996977 in words is "nine hundred ninety-six thousand, nine hundred seventy-seven".