87680805 has 8 divisors (see below), whose sum is σ = 140289312. Its totient is φ = 46763088.

The previous prime is 87680771. The next prime is 87680809. The reversal of 87680805 is 50808678.

It is a happy number.

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

It is not a de Polignac number, because 87680805 - 2¹² = 87676709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87680809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2922679 + ... + 2922708.

It is an arithmetic number, because the mean of its divisors is an integer number (17536164).

Almost surely, 2^87680805 is an apocalyptic number.

It is an amenable number.

87680805 is a deficient number, since it is larger than the sum of its proper divisors (52608507).

87680805 is a wasteful number, since it uses less digits than its factorization.

87680805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5845395.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 87680805 is about 9363.8029133467. The cubic root of 87680805 is about 444.2575761754.

The spelling of 87680805 in words is "eighty-seven million, six hundred eighty thousand, eight hundred five".