84680784 has 30 divisors (see below), whose sum is σ = 236988986. Its totient is φ = 28226880.

The previous prime is 84680773. The next prime is 84680801. The reversal of 84680784 is 48708648.

It can be written as a sum of positive squares in only one way, i.e., 50808384 + 33872400 = 7128^2 + 5820^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 293887 + ... + 294174.

Almost surely, 2^84680784 is an apocalyptic number.

It is an amenable number.

84680784 is an abundant number, since it is smaller than the sum of its proper divisors (152308202).

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

84680784 is a wasteful number, since it uses less digits than its factorization.

84680784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588075 (or 588066 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 84680784 is about 9202.2162547943. The cubic root of 84680784 is about 439.1318695517.

The spelling of 84680784 in words is "eighty-four million, six hundred eighty thousand, seven hundred eighty-four".