86401619 has 4 divisors (see below), whose sum is σ = 89188800. Its totient is φ = 83614440.

The previous prime is 86401603. The next prime is 86401631. The reversal of 86401619 is 91610468.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86401619 - 2⁴ = 86401603 is a prime.

It is a super-2 number, since 2×86401619² = 14930479531642322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86401649) 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, 1393544 + ... + 1393605.

It is an arithmetic number, because the mean of its divisors is an integer number (22297200).

Almost surely, 2^86401619 is an apocalyptic number.

86401619 is a deficient number, since it is larger than the sum of its proper divisors (2787181).

86401619 is a wasteful number, since it uses less digits than its factorization.

86401619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787180.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 86401619 is about 9295.2471188237. The cubic root of 86401619 is about 442.0865411377.

The spelling of 86401619 in words is "eighty-six million, four hundred one thousand, six hundred nineteen".