87723544 has 16 divisors (see below), whose sum is σ = 164581200. Its totient is φ = 43835232.

The previous prime is 87723523. The next prime is 87723557. The reversal of 87723544 is 44532778.

It is a junction number, because it is equal to n+sod(n) for n = 87723497 and 87723506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23109 + ... + 26635.

It is an arithmetic number, because the mean of its divisors is an integer number (10286325).

Almost surely, 2^87723544 is an apocalyptic number.

It is an amenable number.

87723544 is a deficient number, since it is larger than the sum of its proper divisors (76857656).

87723544 is a wasteful number, since it uses less digits than its factorization.

87723544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6642 (or 6638 counting only the distinct ones).

The product of its digits is 188160, while the sum is 40.

The square root of 87723544 is about 9366.0847743334. The cubic root of 87723544 is about 444.3297471991.

The spelling of 87723544 in words is "eighty-seven million, seven hundred twenty-three thousand, five hundred forty-four".