87479787 has 8 divisors (see below), whose sum is σ = 121711104. Its totient is φ = 55784168.

The previous prime is 87479779. The next prime is 87479797. The reversal of 87479787 is 78797478.

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

It is a cyclic number.

It is not a de Polignac number, because 87479787 - 2³ = 87479779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87479797) 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, 633843 + ... + 633980.

It is an arithmetic number, because the mean of its divisors is an integer number (15213888).

Almost surely, 2^87479787 is an apocalyptic number.

87479787 is a deficient number, since it is larger than the sum of its proper divisors (34231317).

87479787 is a wasteful number, since it uses less digits than its factorization.

87479787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267849.

The product of its digits is 5531904, while the sum is 57.

The square root of 87479787 is about 9353.0629742347. The cubic root of 87479787 is about 443.9178130890.

The spelling of 87479787 in words is "eighty-seven million, four hundred seventy-nine thousand, seven hundred eighty-seven".