977996 has 12 divisors (see below), whose sum is σ = 1770720. Its totient is φ = 472080.

The previous prime is 977971. The next prime is 978001. The reversal of 977996 is 699779.

It is a self number, because there is not a number n which added to its sum of digits gives 977996.

It is an unprimeable number.

977996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4100 + ... + 4331.

It is an arithmetic number, because the mean of its divisors is an integer number (147560).

2⁹⁷⁷⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

977996 is a deficient number, since it is larger than the sum of its proper divisors (792724).

977996 is a wasteful number, since it uses less digits than its factorization.

977996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8464 (or 8462 counting only the distinct ones).

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

The square root of 977996 is about 988.9368028342. The cubic root of 977996 is about 99.2610868550.

The spelling of 977996 in words is "nine hundred seventy-seven thousand, nine hundred ninety-six".