87622687 has 2 divisors, whose sum is σ = 87622688. Its totient is φ = 87622686.

The previous prime is 87622673. The next prime is 87622741. The reversal of 87622687 is 78622678.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87622687 - 2⁷ = 87622559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87622627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43811343 + 43811344.

It is an arithmetic number, because the mean of its divisors is an integer number (43811344).

Almost surely, 2^87622687 is an apocalyptic number.

87622687 is a deficient number, since it is larger than the sum of its proper divisors (1).

87622687 is an equidigital number, since it uses as much as digits as its factorization.

87622687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 46.

The square root of 87622687 is about 9360.6990657749. The cubic root of 87622687 is about 444.1593978318.

Subtracting from 87622687 its reverse (78622678), we obtain a palindrome (9000009).

It can be divided in two parts, 8762 and 2687, that added together give a square (11449 = 107²).

The spelling of 87622687 in words is "eighty-seven million, six hundred twenty-two thousand, six hundred eighty-seven".