87774544 has 80 divisors (see below), whose sum is σ = 201862080. Its totient is φ = 36666240.

The previous prime is 87774529. The next prime is 87774569. The reversal of 87774544 is 44547778.

It is a junction number, because it is equal to n+sod(n) for n = 87774494 and 87774503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386559 + ... + 386785.

It is an arithmetic number, because the mean of its divisors is an integer number (2523276).

Almost surely, 2^87774544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87774544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100931040).

87774544 is an abundant number, since it is smaller than the sum of its proper divisors (114087536).

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

87774544 is a wasteful number, since it uses less digits than its factorization.

87774544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 253 counting only the distinct ones).

The product of its digits is 878080, while the sum is 46.

The square root of 87774544 is about 9368.8069678055. The cubic root of 87774544 is about 444.4158374550.

The spelling of 87774544 in words is "eighty-seven million, seven hundred seventy-four thousand, five hundred forty-four".