86219609669 has 8 divisors (see below), whose sum is σ = 88374644568. Its totient is φ = 84067056640.

The previous prime is 86219609659. The next prime is 86219609701. The reversal of 86219609669 is 96690691268.

It can be written as a sum of positive squares in 4 ways, for example, as 7209708100 + 79009901569 = 84910^2 + 281087^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86219609669 - 2²⁴ = 86202832453 is a prime.

It is a super-2 number, since 2×86219609669² (a number of 23 digits) contains 22 as substring.

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 (86219609659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550022 + ... + 689175.

It is an arithmetic number, because the mean of its divisors is an integer number (11046830571).

Almost surely, 2^86219609669 is an apocalyptic number.

It is an amenable number.

86219609669 is a deficient number, since it is larger than the sum of its proper divisors (2155034899).

86219609669 is a wasteful number, since it uses less digits than its factorization.

86219609669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240935.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The spelling of 86219609669 in words is "eighty-six billion, two hundred nineteen million, six hundred nine thousand, six hundred sixty-nine".