850987 has 4 divisors (see below), whose sum is σ = 856080. Its totient is φ = 845896.

The previous prime is 850979. The next prime is 851009. The reversal of 850987 is 789058.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789058 = 2 ⋅394529.

It is a cyclic number.

It is not a de Polignac number, because 850987 - 2³ = 850979 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2287 + ... + 2632.

It is an arithmetic number, because the mean of its divisors is an integer number (214020).

2⁸⁵⁰⁹⁸⁷ is an apocalyptic number.

850987 is a deficient number, since it is larger than the sum of its proper divisors (5093).

850987 is a wasteful number, since it uses less digits than its factorization.

850987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 850987 is about 922.4895663367. The cubic root of 850987 is about 94.7634743892.

It can be divided in two parts, 85098 and 7, that multiplied together give a triangular number (595686 = T₁₀₉₁).

The spelling of 850987 in words is "eight hundred fifty thousand, nine hundred eighty-seven".