87675689 has 2 divisors, whose sum is σ = 87675690. Its totient is φ = 87675688.

The previous prime is 87675673. The next prime is 87675697. The reversal of 87675689 is 98657678.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79352464 + 8323225 = 8908^2 + 2885^2 .

It is a cyclic number.

It is not a de Polignac number, because 87675689 - 2⁴ = 87675673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87675629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43837844 + 43837845.

It is an arithmetic number, because the mean of its divisors is an integer number (43837845).

Almost surely, 2^87675689 is an apocalyptic number.

It is an amenable number.

87675689 is a deficient number, since it is larger than the sum of its proper divisors (1).

87675689 is an equidigital number, since it uses as much as digits as its factorization.

87675689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 56.

The square root of 87675689 is about 9363.5297297547. The cubic root of 87675689 is about 444.2489354930.

The spelling of 87675689 in words is "eighty-seven million, six hundred seventy-five thousand, six hundred eighty-nine".