87061319 has 2 divisors, whose sum is σ = 87061320. Its totient is φ = 87061318.

The previous prime is 87061307. The next prime is 87061321. The reversal of 87061319 is 91316078.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87061319 - 2²⁰ = 86012743 is a prime.

It is a super-2 number, since 2×87061319² = 15159346532039522, which contains 22 as substring.

Together with 87061321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87061339) 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, 43530659 + 43530660.

It is an arithmetic number, because the mean of its divisors is an integer number (43530660).

Almost surely, 2^87061319 is an apocalyptic number.

87061319 is a deficient number, since it is larger than the sum of its proper divisors (1).

87061319 is an equidigital number, since it uses as much as digits as its factorization.

87061319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 87061319 is about 9330.6655175287. The cubic root of 87061319 is about 443.2088401768.

The spelling of 87061319 in words is "eighty-seven million, sixty-one thousand, three hundred nineteen".