87322987 has 2 divisors, whose sum is σ = 87322988. Its totient is φ = 87322986.

The previous prime is 87322979. The next prime is 87323011. The reversal of 87322987 is 78922378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87322987 - 2³ = 87322979 is a prime.

It is not a weakly prime, because it can be changed into another prime (87322187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43661493 + 43661494.

It is an arithmetic number, because the mean of its divisors is an integer number (43661494).

Almost surely, 2^87322987 is an apocalyptic number.

87322987 is a deficient number, since it is larger than the sum of its proper divisors (1).

87322987 is an equidigital number, since it uses as much as digits as its factorization.

87322987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 87322987 is about 9344.6769339555. The cubic root of 87322987 is about 443.6524262885.

The spelling of 87322987 in words is "eighty-seven million, three hundred twenty-two thousand, nine hundred eighty-seven".