87531612 has 24 divisors (see below), whose sum is σ = 233417856. Its totient is φ = 25009008.

The previous prime is 87531611. The next prime is 87531649. The reversal of 87531612 is 21613578.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87531611) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 520938 + ... + 521105.

It is an arithmetic number, because the mean of its divisors is an integer number (9725744).

Almost surely, 2^87531612 is an apocalyptic number.

It is an amenable number.

87531612 is an abundant number, since it is smaller than the sum of its proper divisors (145886244).

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

87531612 is a wasteful number, since it uses less digits than its factorization.

87531612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042057 (or 1042055 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 87531612 is about 9355.8330468216. The cubic root of 87531612 is about 444.0054580938.

The spelling of 87531612 in words is "eighty-seven million, five hundred thirty-one thousand, six hundred twelve".