2087567917 has 2 divisors, whose sum is σ = 2087567918. Its totient is φ = 2087567916.

The previous prime is 2087567897. The next prime is 2087567947. The reversal of 2087567917 is 7197657802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1823375401 + 264192516 = 42701^2 + 16254^2 .

It is a cyclic number.

It is not a de Polignac number, because 2087567917 - 2⁷ = 2087567789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2087567947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043783958 + 1043783959.

It is an arithmetic number, because the mean of its divisors is an integer number (1043783959).

Almost surely, 2^2087567917 is an apocalyptic number.

It is an amenable number.

2087567917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2087567917 is an equidigital number, since it uses as much as digits as its factorization.

2087567917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1481760, while the sum is 52.

The square root of 2087567917 is about 45689.9104507768. The cubic root of 2087567917 is about 1278.0471353995.

The spelling of 2087567917 in words is "two billion, eighty-seven million, five hundred sixty-seven thousand, nine hundred seventeen".