867977 has 8 divisors (see below), whose sum is σ = 996960. Its totient is φ = 747360.

The previous prime is 867959. The next prime is 867991. The reversal of 867977 is 779768.

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 867977 - 2⁶ = 867913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (867947) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1868 + ... + 2285.

It is an arithmetic number, because the mean of its divisors is an integer number (124620).

2⁸⁶⁷⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

867977 is a deficient number, since it is larger than the sum of its proper divisors (128983).

867977 is a wasteful number, since it uses less digits than its factorization.

867977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183.

The product of its digits is 148176, while the sum is 44.

The square root of 867977 is about 931.6528323362. The cubic root of 867977 is about 95.3899759021.

Subtracting from 867977 its reverse (779768), we obtain a square (88209 = 297²).

The spelling of 867977 in words is "eight hundred sixty-seven thousand, nine hundred seventy-seven".