86780000 has 60 divisors (see below), whose sum is σ = 213541020. Its totient is φ = 34704000.

The previous prime is 86779981. The next prime is 86780017. The reversal of 86780000 is 8768.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 17831 + ... + 22169.

It is an arithmetic number, because the mean of its divisors is an integer number (3559017).

Almost surely, 2^86780000 is an apocalyptic number.

86780000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86780000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106770510).

86780000 is an abundant number, since it is smaller than the sum of its proper divisors (126761020).

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

86780000 is an equidigital number, since it uses as much as digits as its factorization.

86780000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4369 (or 4346 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 86780000 is about 9315.5783502690. The cubic root of 86780000 is about 442.7309486332.

Adding to 86780000 its reverse (8768), we get a palindrome (86788768).

The spelling of 86780000 in words is "eighty-six million, seven hundred eighty thousand".