85784884 has 6 divisors (see below), whose sum is σ = 150123554. Its totient is φ = 42892440.

The previous prime is 85784869. The next prime is 85784891. The reversal of 85784884 is 48848758.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 85045284 + 739600 = 9222^2 + 860^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10723107 + ... + 10723114.

Almost surely, 2^85784884 is an apocalyptic number.

It is an amenable number.

85784884 is a deficient number, since it is larger than the sum of its proper divisors (64338670).

85784884 is a wasteful number, since it uses less digits than its factorization.

85784884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21446225 (or 21446223 counting only the distinct ones).

The product of its digits is 2293760, while the sum is 52.

The square root of 85784884 is about 9262.0129561559. The cubic root of 85784884 is about 441.0321567521.

It can be divided in two parts, 85784 and 884, that added together give a palindrome (86668).

The spelling of 85784884 in words is "eighty-five million, seven hundred eighty-four thousand, eight hundred eighty-four".