87648089 has 2 divisors, whose sum is σ = 87648090. Its totient is φ = 87648088.

The previous prime is 87648059. The next prime is 87648097. The reversal of 87648089 is 98084678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57760000 + 29888089 = 7600^2 + 5467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87648089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87648049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43824044 + 43824045.

It is an arithmetic number, because the mean of its divisors is an integer number (43824045).

Almost surely, 2^87648089 is an apocalyptic number.

It is an amenable number.

87648089 is a deficient number, since it is larger than the sum of its proper divisors (1).

87648089 is an equidigital number, since it uses as much as digits as its factorization.

87648089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 87648089 is about 9362.0558105578. The cubic root of 87648089 is about 444.2023145973.

The spelling of 87648089 in words is "eighty-seven million, six hundred forty-eight thousand, eighty-nine".