87280619 has 2 divisors, whose sum is σ = 87280620. Its totient is φ = 87280618.

The previous prime is 87280597. The next prime is 87280667. The reversal of 87280619 is 91608278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87280619 - 2²⁰ = 86232043 is a prime.

It is a super-2 number, since 2×87280619² = 15235812906046322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87280679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43640309 + 43640310.

It is an arithmetic number, because the mean of its divisors is an integer number (43640310).

Almost surely, 2^87280619 is an apocalyptic number.

87280619 is a deficient number, since it is larger than the sum of its proper divisors (1).

87280619 is an equidigital number, since it uses as much as digits as its factorization.

87280619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 87280619 is about 9342.4096998580. The cubic root of 87280619 is about 443.5806631807.

The spelling of 87280619 in words is "eighty-seven million, two hundred eighty thousand, six hundred nineteen".