86916784 has 20 divisors (see below), whose sum is σ = 178307784. Its totient is φ = 40901888.

The previous prime is 86916779. The next prime is 86916787. The reversal of 86916784 is 48761968.

It is a super-3 number, since 3×86916784³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (86916787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159502 + ... + 160045.

Almost surely, 2^86916784 is an apocalyptic number.

It is an amenable number.

86916784 is an abundant number, since it is smaller than the sum of its proper divisors (91391000).

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

86916784 is a wasteful number, since it uses less digits than its factorization.

86916784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319572 (or 319566 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 86916784 is about 9322.9171400372. The cubic root of 86916784 is about 442.9634396840.

The spelling of 86916784 in words is "eighty-six million, nine hundred sixteen thousand, seven hundred eighty-four".