862851213 has 24 divisors (see below), whose sum is σ = 1425265088. Its totient is φ = 492754752.

The previous prime is 862851203. The next prime is 862851217. The reversal of 862851213 is 312158268.

It is a happy number.

862851213 is a `hidden beast` number, since 8 + 628 + 5 + 1 + 21 + 3 = 666.

It is not a de Polignac number, because 862851213 - 2¹⁰ = 862850189 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862851217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135681 + ... + 141897.

Almost surely, 2^862851213 is an apocalyptic number.

It is an amenable number.

862851213 is a deficient number, since it is larger than the sum of its proper divisors (562413875).

862851213 is a wasteful number, since it uses less digits than its factorization.

862851213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8433 (or 8430 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 862851213 is about 29374.3291497866. The cubic root of 862851213 is about 952.0183176365.

The spelling of 862851213 in words is "eight hundred sixty-two million, eight hundred fifty-one thousand, two hundred thirteen".