87557860 has 24 divisors (see below), whose sum is σ = 198016056. Its totient is φ = 32328960.

The previous prime is 87557819. The next prime is 87557861. The reversal of 87557860 is 6875578.

It can be written as a sum of positive squares in 4 ways, for example, as 19131876 + 68425984 = 4374^2 + 8272^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87557860.

It is not an unprimeable number, because it can be changed into a prime (87557861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168121 + ... + 168640.

It is an arithmetic number, because the mean of its divisors is an integer number (8250669).

Almost surely, 2^87557860 is an apocalyptic number.

It is an amenable number.

87557860 is an abundant number, since it is smaller than the sum of its proper divisors (110458196).

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

87557860 is a wasteful number, since it uses less digits than its factorization.

87557860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336783 (or 336781 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 87557860 is about 9357.2357029200. The cubic root of 87557860 is about 444.0498347872.

The spelling of 87557860 in words is "eighty-seven million, five hundred fifty-seven thousand, eight hundred sixty".