84985580 has 48 divisors (see below), whose sum is σ = 183145536. Its totient is φ = 33116160.

The previous prime is 84985561. The next prime is 84985583. The reversal of 84985580 is 8558948.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84985583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137432 + ... + 138048.

It is an arithmetic number, because the mean of its divisors is an integer number (3815532).

Almost surely, 2^84985580 is an apocalyptic number.

It is an amenable number.

84985580 is an abundant number, since it is smaller than the sum of its proper divisors (98159956).

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

84985580 is a wasteful number, since it uses less digits than its factorization.

84985580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The square root of 84985580 is about 9218.7623898222. The cubic root of 84985580 is about 439.6581021689.

The spelling of 84985580 in words is "eighty-four million, nine hundred eighty-five thousand, five hundred eighty".