87618012 has 24 divisors (see below), whose sum is σ = 204598800. Its totient is φ = 29183616.

The previous prime is 87617989. The next prime is 87618023. The reversal of 87618012 is 21081678.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23064 + ... + 26592.

It is an arithmetic number, because the mean of its divisors is an integer number (8524950).

Almost surely, 2^87618012 is an apocalyptic number.

It is an amenable number.

87618012 is an abundant number, since it is smaller than the sum of its proper divisors (116980788).

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

87618012 is a wasteful number, since it uses less digits than its factorization.

87618012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605 (or 5603 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 87618012 is about 9360.4493481884. The cubic root of 87618012 is about 444.1514984997.

The spelling of 87618012 in words is "eighty-seven million, six hundred eighteen thousand, twelve".