877977 has 6 divisors (see below), whose sum is σ = 1268202. Its totient is φ = 585312.

The previous prime is 877949. The next prime is 877997. The reversal of 877977 is 779778.

It can be written as a sum of positive squares in only one way, i.e., 488601 + 389376 = 699^2 + 624^2 .

It is not a de Polignac number, because 877977 - 2¹¹ = 875929 is a prime.

It is a super-2 number, since 2×877977² = 1541687225058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877907) 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 5 ways as a sum of consecutive naturals, for example, 48768 + ... + 48785.

It is an arithmetic number, because the mean of its divisors is an integer number (211367).

2⁸⁷⁷⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

877977 is a deficient number, since it is larger than the sum of its proper divisors (390225).

877977 is a wasteful number, since it uses less digits than its factorization.

877977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97559 (or 97556 counting only the distinct ones).

The product of its digits is 172872, while the sum is 45.

The square root of 877977 is about 937.0042689337. The cubic root of 877977 is about 95.7549086599.

The spelling of 877977 in words is "eight hundred seventy-seven thousand, nine hundred seventy-seven".