87768501 has 8 divisors (see below), whose sum is σ = 123908544. Its totient is φ = 55070400.

The previous prime is 87768497. The next prime is 87768509. The reversal of 87768501 is 10586778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87768501 - 2² = 87768497 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87768509) 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 7 ways as a sum of consecutive naturals, for example, 860425 + ... + 860526.

It is an arithmetic number, because the mean of its divisors is an integer number (15488568).

Almost surely, 2^87768501 is an apocalyptic number.

It is an amenable number.

87768501 is a deficient number, since it is larger than the sum of its proper divisors (36140043).

87768501 is a wasteful number, since it uses less digits than its factorization.

87768501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720971.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 87768501 is about 9368.4844558765. The cubic root of 87768501 is about 444.4056383456.

It can be divided in two parts, 877 and 68501, that added together give a triangular number (69378 = T₃₇₂).

The spelling of 87768501 in words is "eighty-seven million, seven hundred sixty-eight thousand, five hundred one".