977886 has 64 divisors (see below), whose sum is σ = 2688000. Its totient is φ = 256608.

The previous prime is 977881. The next prime is 977897. The reversal of 977886 is 688779.

It is a super-2 number, since 2×977886² = 1912522057992, which contains 22 as substring.

Its product of digits (169344) is a multiple of the sum of its prime divisors (224).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4815 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (42000).

2⁹⁷⁷⁸⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 977886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1344000).

977886 is an abundant number, since it is smaller than the sum of its proper divisors (1710114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

977886 is a wasteful number, since it uses less digits than its factorization.

977886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 224 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 977886 is about 988.8811859875. The cubic root of 977886 is about 99.2573652553.

The spelling of 977886 in words is "nine hundred seventy-seven thousand, eight hundred eighty-six".