87326779 has 2 divisors, whose sum is σ = 87326780. Its totient is φ = 87326778.

The previous prime is 87326749. The next prime is 87326797. The reversal of 87326779 is 97762378.

Together with next prime (87326797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87326779 - 2¹³ = 87318587 is a prime.

It is not a weakly prime, because it can be changed into another prime (87326749) 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, 43663389 + 43663390.

It is an arithmetic number, because the mean of its divisors is an integer number (43663390).

Almost surely, 2^87326779 is an apocalyptic number.

87326779 is a deficient number, since it is larger than the sum of its proper divisors (1).

87326779 is an equidigital number, since it uses as much as digits as its factorization.

87326779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 49.

The square root of 87326779 is about 9344.8798280128. The cubic root of 87326779 is about 443.6588480632.

The spelling of 87326779 in words is "eighty-seven million, three hundred twenty-six thousand, seven hundred seventy-nine".