86512784 has 10 divisors (see below), whose sum is σ = 167618550. Its totient is φ = 43256384.

The previous prime is 86512753. The next prime is 86512799. The reversal of 86512784 is 48721568.

It can be written as a sum of positive squares in only one way, i.e., 86118400 + 394384 = 9280^2 + 628^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2703509 + ... + 2703540.

It is an arithmetic number, because the mean of its divisors is an integer number (16761855).

Almost surely, 2^86512784 is an apocalyptic number.

It is an amenable number.

86512784 is a deficient number, since it is larger than the sum of its proper divisors (81105766).

86512784 is a wasteful number, since it uses less digits than its factorization.

86512784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407057 (or 5407051 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 86512784 is about 9301.2248655755. The cubic root of 86512784 is about 442.2760572192.

The spelling of 86512784 in words is "eighty-six million, five hundred twelve thousand, seven hundred eighty-four".