87411689 has 2 divisors, whose sum is σ = 87411690. Its totient is φ = 87411688.

The previous prime is 87411673. The next prime is 87411697. The reversal of 87411689 is 98611478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83411689 + 4000000 = 9133^2 + 2000^2 .

It is a cyclic number.

It is not a de Polignac number, because 87411689 - 2⁴ = 87411673 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87411089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43705844 + 43705845.

It is an arithmetic number, because the mean of its divisors is an integer number (43705845).

Almost surely, 2^87411689 is an apocalyptic number.

It is an amenable number.

87411689 is a deficient number, since it is larger than the sum of its proper divisors (1).

87411689 is an equidigital number, since it uses as much as digits as its factorization.

87411689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 44.

The square root of 87411689 is about 9349.4218537833. The cubic root of 87411689 is about 443.8025949959.

The spelling of 87411689 in words is "eighty-seven million, four hundred eleven thousand, six hundred eighty-nine".