87622673 has 2 divisors, whose sum is σ = 87622674. Its totient is φ = 87622672.

The previous prime is 87622669. The next prime is 87622687. The reversal of 87622673 is 37622678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76177984 + 11444689 = 8728^2 + 3383^2 .

It is a cyclic number.

It is not a de Polignac number, because 87622673 - 2² = 87622669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87622673.

It is not a weakly prime, because it can be changed into another prime (87652673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43811336 + 43811337.

It is an arithmetic number, because the mean of its divisors is an integer number (43811337).

Almost surely, 2^87622673 is an apocalyptic number.

It is an amenable number.

87622673 is a deficient number, since it is larger than the sum of its proper divisors (1).

87622673 is an equidigital number, since it uses as much as digits as its factorization.

87622673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 87622673 is about 9360.6983179675. The cubic root of 87622673 is about 444.1593741765.

The spelling of 87622673 in words is "eighty-seven million, six hundred twenty-two thousand, six hundred seventy-three".