850013687 has 2 divisors, whose sum is σ = 850013688. Its totient is φ = 850013686.

The previous prime is 850013639. The next prime is 850013699. The reversal of 850013687 is 786310058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 850013687 - 2²² = 845819383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 850013687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850013587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425006843 + 425006844.

It is an arithmetic number, because the mean of its divisors is an integer number (425006844).

Almost surely, 2^850013687 is an apocalyptic number.

850013687 is a deficient number, since it is larger than the sum of its proper divisors (1).

850013687 is an equidigital number, since it uses as much as digits as its factorization.

850013687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 850013687 is about 29154.9942033951. The cubic root of 850013687 is about 947.2733215744.

It can be divided in two parts, 85001 and 3687, that added together give a palindrome (88688).

The spelling of 850013687 in words is "eight hundred fifty million, thirteen thousand, six hundred eighty-seven".