86780500 has 24 divisors (see below), whose sum is σ = 189529704. Its totient is φ = 34712000.

The previous prime is 86780483. The next prime is 86780509. The reversal of 86780500 is 508768.

It can be written as a sum of positive squares in 4 ways, for example, as 14394436 + 72386064 = 3794^2 + 8508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86780509) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 86281 + ... + 87280.

It is an arithmetic number, because the mean of its divisors is an integer number (7897071).

Almost surely, 2^86780500 is an apocalyptic number.

It is an amenable number.

86780500 is an abundant number, since it is smaller than the sum of its proper divisors (102749204).

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

86780500 is a wasteful number, since it uses less digits than its factorization.

86780500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173580 (or 173568 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 86780500 is about 9315.6051869967. The cubic root of 86780500 is about 442.7317989254.

The spelling of 86780500 in words is "eighty-six million, seven hundred eighty thousand, five hundred".