87772847 has 8 divisors (see below), whose sum is σ = 89956944. Its totient is φ = 85595328.

The previous prime is 87772787. The next prime is 87772859. The reversal of 87772847 is 74827778.

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 87772847 - 2⁸ = 87772591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87772795 and 87772804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87772877) 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, 35483 + ... + 37875.

It is an arithmetic number, because the mean of its divisors is an integer number (11244618).

Almost surely, 2^87772847 is an apocalyptic number.

87772847 is a deficient number, since it is larger than the sum of its proper divisors (2184097).

87772847 is a wasteful number, since it uses less digits than its factorization.

87772847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289.

The product of its digits is 1229312, while the sum is 50.

The square root of 87772847 is about 9368.7164008737. The cubic root of 87772847 is about 444.4129733804.

The spelling of 87772847 in words is "eighty-seven million, seven hundred seventy-two thousand, eight hundred forty-seven".