86818810 has 16 divisors (see below), whose sum is σ = 168295176. Its totient is φ = 32056128.

The previous prime is 86818793. The next prime is 86818811. The reversal of 86818810 is 1881868.

It can be written as a sum of positive squares in 4 ways, for example, as 32251041 + 54567769 = 5679^2 + 7387^2 .

It is a super-2 number, since 2×86818810² = 15075011539632200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86818811) 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, 333789 + ... + 334048.

Almost surely, 2^86818810 is an apocalyptic number.

86818810 is a deficient number, since it is larger than the sum of its proper divisors (81476366).

86818810 is a wasteful number, since it uses less digits than its factorization.

86818810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667857.

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 86818810 is about 9317.6611872293. The cubic root of 86818810 is about 442.7969385975.

The spelling of 86818810 in words is "eighty-six million, eight hundred eighteen thousand, eight hundred ten".