84985772 has 6 divisors (see below), whose sum is σ = 148725108. Its totient is φ = 42492884.

The previous prime is 84985763. The next prime is 84985777. The reversal of 84985772 is 27758948.

It is a self number, because there is not a number n which added to its sum of digits gives 84985772.

It is not an unprimeable number, because it can be changed into a prime (84985777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10623218 + ... + 10623225.

It is an arithmetic number, because the mean of its divisors is an integer number (24787518).

Almost surely, 2^84985772 is an apocalyptic number.

It is an amenable number.

84985772 is a deficient number, since it is larger than the sum of its proper divisors (63739336).

84985772 is a wasteful number, since it uses less digits than its factorization.

84985772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21246447 (or 21246445 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 50.

The square root of 84985772 is about 9218.7728033616. The cubic root of 84985772 is about 439.6584332615.

The spelling of 84985772 in words is "eighty-four million, nine hundred eighty-five thousand, seven hundred seventy-two".