977866 has 8 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 480588.

The previous prime is 977861. The next prime is 977881. The reversal of 977866 is 668779.

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

It is not an unprimeable number, because it can be changed into a prime (977861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4026 + ... + 4261.

It is an arithmetic number, because the mean of its divisors is an integer number (186480).

2⁹⁷⁷⁸⁶⁶ is an apocalyptic number.

977866 is a deficient number, since it is larger than the sum of its proper divisors (513974).

977866 is a wasteful number, since it uses less digits than its factorization.

977866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8348.

The product of its digits is 127008, while the sum is 43.

The square root of 977866 is about 988.8710734975. The cubic root of 977866 is about 99.2566885708.

The spelling of 977866 in words is "nine hundred seventy-seven thousand, eight hundred sixty-six".