87187037 has 4 divisors (see below), whose sum is σ = 99642336. Its totient is φ = 74731740.

The previous prime is 87187027. The next prime is 87187049. The reversal of 87187037 is 73078178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87187037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87186985 and 87187003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87187027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6227639 + ... + 6227652.

It is an arithmetic number, because the mean of its divisors is an integer number (24910584).

Almost surely, 2^87187037 is an apocalyptic number.

It is an amenable number.

87187037 is a deficient number, since it is larger than the sum of its proper divisors (12455299).

87187037 is a wasteful number, since it uses less digits than its factorization.

87187037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12455298.

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 87187037 is about 9337.3999057553. The cubic root of 87187037 is about 443.4220712314.

The spelling of 87187037 in words is "eighty-seven million, one hundred eighty-seven thousand, thirty-seven".