87712751 has 4 divisors (see below), whose sum is σ = 100243152. Its totient is φ = 75182352.

The previous prime is 87712727. The next prime is 87712787. The reversal of 87712751 is 15721778.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87712751 - 2¹⁸ = 87450607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87712711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6265190 + ... + 6265203.

It is an arithmetic number, because the mean of its divisors is an integer number (25060788).

Almost surely, 2^87712751 is an apocalyptic number.

87712751 is a deficient number, since it is larger than the sum of its proper divisors (12530401).

87712751 is a wasteful number, since it uses less digits than its factorization.

87712751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12530400.

The product of its digits is 27440, while the sum is 38.

The square root of 87712751 is about 9365.5085820259. The cubic root of 87712751 is about 444.3115238600.

The spelling of 87712751 in words is "eighty-seven million, seven hundred twelve thousand, seven hundred fifty-one".