86718020 has 24 divisors (see below), whose sum is σ = 192820824. Its totient is φ = 32646656.

The previous prime is 86718019. The next prime is 86718029. The reversal of 86718020 is 2081768.

It can be written as a sum of positive squares in 4 ways, for example, as 22429696 + 64288324 = 4736^2 + 8018^2 .

It is not an unprimeable number, because it can be changed into a prime (86718029) 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, 127187 + ... + 127866.

It is an arithmetic number, because the mean of its divisors is an integer number (8034201).

Almost surely, 2^86718020 is an apocalyptic number.

It is an amenable number.

86718020 is an abundant number, since it is smaller than the sum of its proper divisors (106102804).

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

86718020 is a wasteful number, since it uses less digits than its factorization.

86718020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255079 (or 255077 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 86718020 is about 9312.2510704985. The cubic root of 86718020 is about 442.6255211168.

Adding to 86718020 its reverse (2081768), we get a palindrome (88799788).

The spelling of 86718020 in words is "eighty-six million, seven hundred eighteen thousand, twenty".