86168619 has 12 divisors (see below), whose sum is σ = 126814896. Its totient is φ = 56361552.

The previous prime is 86168617. The next prime is 86168639. The reversal of 86168619 is 91686168.

It is a happy number.

It is not a de Polignac number, because 86168619 - 2¹ = 86168617 is a prime.

It is a super-2 number, since 2×86168619² = 14850061800734322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86168617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89847 + ... + 90800.

It is an arithmetic number, because the mean of its divisors is an integer number (10567908).

Almost surely, 2^86168619 is an apocalyptic number.

86168619 is a deficient number, since it is larger than the sum of its proper divisors (40646277).

86168619 is a wasteful number, since it uses less digits than its factorization.

86168619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180706 (or 180703 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 86168619 is about 9282.7053707419. The cubic root of 86168619 is about 441.6887905060.

The spelling of 86168619 in words is "eighty-six million, one hundred sixty-eight thousand, six hundred nineteen".