86879205 has 108 divisors (see below), whose sum is σ = 185424876. Its totient is φ = 37497600.

The previous prime is 86879203. The next prime is 86879227. The reversal of 86879205 is 50297868.

It can be written as a sum of positive squares in 2 ways, for example, as 15256836 + 71622369 = 3906^2 + 8463^2 .

It is not a de Polignac number, because 86879205 - 2¹ = 86879203 is a prime.

It is a super-2 number, since 2×86879205² = 15095992522864050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86879201) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2118985 + ... + 2119025.

It is an arithmetic number, because the mean of its divisors is an integer number (1716897).

Almost surely, 2^86879205 is an apocalyptic number.

It is an amenable number.

86879205 is an abundant number, since it is smaller than the sum of its proper divisors (98545671).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86879205 is a wasteful number, since it uses less digits than its factorization.

86879205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 86879205 is about 9320.9015121929. The cubic root of 86879205 is about 442.8995911693.

The spelling of 86879205 in words is "eighty-six million, eight hundred seventy-nine thousand, two hundred five".