86799669 has 16 divisors (see below), whose sum is σ = 129668160. Its totient is φ = 51183360.

The previous prime is 86799667. The next prime is 86799689. The reversal of 86799669 is 96699768.

It is a happy number.

It is not a de Polignac number, because 86799669 - 2¹ = 86799667 is a prime.

It is a super-2 number, since 2×86799669² = 15068365077019122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86799667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34324 + ... + 36765.

It is an arithmetic number, because the mean of its divisors is an integer number (8104260).

Almost surely, 2^86799669 is an apocalyptic number.

It is an amenable number.

86799669 is a deficient number, since it is larger than the sum of its proper divisors (42868491).

86799669 is a wasteful number, since it uses less digits than its factorization.

86799669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71140.

The product of its digits is 8817984, while the sum is 60.

The square root of 86799669 is about 9316.6339951723. The cubic root of 86799669 is about 442.7643949619.

Subtracting 86799669 from its reverse (96699768), we obtain a palindrome (9900099).

The spelling of 86799669 in words is "eighty-six million, seven hundred ninety-nine thousand, six hundred sixty-nine".