87067571 has 2 divisors, whose sum is σ = 87067572. Its totient is φ = 87067570.

The previous prime is 87067567. The next prime is 87067577. The reversal of 87067571 is 17576078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87067571 - 2² = 87067567 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87067577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43533785 + 43533786.

It is an arithmetic number, because the mean of its divisors is an integer number (43533786).

Almost surely, 2^87067571 is an apocalyptic number.

87067571 is a deficient number, since it is larger than the sum of its proper divisors (1).

87067571 is an equidigital number, since it uses as much as digits as its factorization.

87067571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 87067571 is about 9331.0005358482. Note that the first 3 decimals coincide. The cubic root of 87067571 is about 443.2194490801.

The spelling of 87067571 in words is "eighty-seven million, sixty-seven thousand, five hundred seventy-one".