87627817 has 2 divisors, whose sum is σ = 87627818. Its totient is φ = 87627816.

The previous prime is 87627779. The next prime is 87627847. The reversal of 87627817 is 71872678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86415616 + 1212201 = 9296^2 + 1101^2 .

It is a cyclic number.

It is not a de Polignac number, because 87627817 - 2⁷ = 87627689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87627847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43813908 + 43813909.

It is an arithmetic number, because the mean of its divisors is an integer number (43813909).

Almost surely, 2^87627817 is an apocalyptic number.

It is an amenable number.

87627817 is a deficient number, since it is larger than the sum of its proper divisors (1).

87627817 is an equidigital number, since it uses as much as digits as its factorization.

87627817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 263424, while the sum is 46.

The square root of 87627817 is about 9360.9730797605. The cubic root of 87627817 is about 444.1680656526.

The spelling of 87627817 in words is "eighty-seven million, six hundred twenty-seven thousand, eight hundred seventeen".