863877 has 16 divisors (see below), whose sum is σ = 1359872. Its totient is φ = 477360.

The previous prime is 863869. The next prime is 863879. The reversal of 863877 is 778368.

863877 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 863877 - 2³ = 863869 is a prime.

It is a super-2 number, since 2×863877² = 1492566942258, which contains 22 as substring.

It is a Duffinian number.

863877 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13 + ... + 1314.

It is an arithmetic number, because the mean of its divisors is an integer number (84992).

2⁸⁶³⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

863877 is a deficient number, since it is larger than the sum of its proper divisors (495995).

863877 is a wasteful number, since it uses less digits than its factorization.

863877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368.

The product of its digits is 56448, while the sum is 39.

The square root of 863877 is about 929.4498372693. The cubic root of 863877 is about 95.2395432200.

The spelling of 863877 in words is "eight hundred sixty-three thousand, eight hundred seventy-seven".