86805780 has 48 divisors (see below), whose sum is σ = 244024704. Its totient is φ = 23056000.

The previous prime is 86805773. The next prime is 86805793. The reversal of 86805780 is 8750868.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13030 + ... + 18530.

It is an arithmetic number, because the mean of its divisors is an integer number (5083848).

Almost surely, 2^86805780 is an apocalyptic number.

It is an amenable number.

86805780 is an abundant number, since it is smaller than the sum of its proper divisors (157218924).

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

86805780 is a wasteful number, since it uses less digits than its factorization.

86805780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5776 (or 5774 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 86805780 is about 9316.9619511942. The cubic root of 86805780 is about 442.7747854383.

The spelling of 86805780 in words is "eighty-six million, eight hundred five thousand, seven hundred eighty".