86780016 has 30 divisors (see below), whose sum is σ = 242863920. Its totient is φ = 28926624.

The previous prime is 86779981. The next prime is 86780017. The reversal of 86780016 is 61008768.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86780017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 301176 + ... + 301463.

It is an arithmetic number, because the mean of its divisors is an integer number (8095464).

Almost surely, 2^86780016 is an apocalyptic number.

It is an amenable number.

86780016 is an abundant number, since it is smaller than the sum of its proper divisors (156083904).

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

86780016 is a wasteful number, since it uses less digits than its factorization.

86780016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602653 (or 602644 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 86780016 is about 9315.5792090455. The cubic root of 86780016 is about 442.7309758426.

The spelling of 86780016 in words is "eighty-six million, seven hundred eighty thousand, sixteen".