87654787 has 4 divisors (see below), whose sum is σ = 95623416. Its totient is φ = 79686160.

The previous prime is 87654779. The next prime is 87654803. The reversal of 87654787 is 78745678.

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

It is a cyclic number.

It is not a de Polignac number, because 87654787 - 2³ = 87654779 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87654727) 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 3 ways as a sum of consecutive naturals, for example, 3984298 + ... + 3984319.

It is an arithmetic number, because the mean of its divisors is an integer number (23905854).

Almost surely, 2^87654787 is an apocalyptic number.

87654787 is a deficient number, since it is larger than the sum of its proper divisors (7968629).

87654787 is a wasteful number, since it uses less digits than its factorization.

87654787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7968628.

The product of its digits is 2634240, while the sum is 52.

The square root of 87654787 is about 9362.4135243002. The cubic root of 87654787 is about 444.2136295096.

The spelling of 87654787 in words is "eighty-seven million, six hundred fifty-four thousand, seven hundred eighty-seven".