87073987 has 32 divisors (see below), whose sum is σ = 120121344. Its totient is φ = 60912000.

The previous prime is 87073963. The next prime is 87073991. The reversal of 87073987 is 78937078.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 87073987 - 2¹⁵ = 87041219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87073987.

It is not an unprimeable number, because it can be changed into a prime (87073957) 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 31 ways as a sum of consecutive naturals, for example, 35862 + ... + 38212.

It is an arithmetic number, because the mean of its divisors is an integer number (3753792).

Almost surely, 2^87073987 is an apocalyptic number.

87073987 is a deficient number, since it is larger than the sum of its proper divisors (33047357).

87073987 is a wasteful number, since it uses less digits than its factorization.

87073987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419.

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 87073987 is about 9331.3443297308. The cubic root of 87073987 is about 443.2303357440.

The spelling of 87073987 in words is "eighty-seven million, seventy-three thousand, nine hundred eighty-seven".