862987 has 2 divisors, whose sum is σ = 862988. Its totient is φ = 862986.

The previous prime is 862973. The next prime is 862991. The reversal of 862987 is 789268.

862987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 862987 - 2¹¹ = 860939 is a prime.

It is not a weakly prime, because it can be changed into another prime (862907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431493 + 431494.

It is an arithmetic number, because the mean of its divisors is an integer number (431494).

2⁸⁶²⁹⁸⁷ is an apocalyptic number.

862987 is a deficient number, since it is larger than the sum of its proper divisors (1).

862987 is an equidigital number, since it uses as much as digits as its factorization.

862987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 862987 is about 928.9709360362. The cubic root of 862987 is about 95.2068254763.

It can be divided in two parts, 862 and 987, that added together give a square (1849 = 43²).

The spelling of 862987 in words is "eight hundred sixty-two thousand, nine hundred eighty-seven".