86619850 has 12 divisors (see below), whose sum is σ = 161113014. Its totient is φ = 34647920.

The previous prime is 86619833. The next prime is 86619851. The reversal of 86619850 is 5891668.

It can be written as a sum of positive squares in 3 ways, for example, as 50367409 + 36252441 = 7097^2 + 6021^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86619797 and 86619806.

It is not an unprimeable number, because it can be changed into a prime (86619851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 866149 + ... + 866248.

Almost surely, 2^86619850 is an apocalyptic number.

86619850 is a deficient number, since it is larger than the sum of its proper divisors (74493164).

86619850 is a wasteful number, since it uses less digits than its factorization.

86619850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732409 (or 1732404 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 86619850 is about 9306.9785644966. The cubic root of 86619850 is about 442.4584318363.

The spelling of 86619850 in words is "eighty-six million, six hundred nineteen thousand, eight hundred fifty".