87206771 has 2 divisors, whose sum is σ = 87206772. Its totient is φ = 87206770.

The previous prime is 87206767. The next prime is 87206797. The reversal of 87206771 is 17760278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87206771 - 2² = 87206767 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87206711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43603385 + 43603386.

It is an arithmetic number, because the mean of its divisors is an integer number (43603386).

Almost surely, 2^87206771 is an apocalyptic number.

87206771 is a deficient number, since it is larger than the sum of its proper divisors (1).

87206771 is an equidigital number, since it uses as much as digits as its factorization.

87206771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 87206771 is about 9338.4565641224. The cubic root of 87206771 is about 443.4555235707.

The spelling of 87206771 in words is "eighty-seven million, two hundred six thousand, seven hundred seventy-one".