2687603161 has 2 divisors, whose sum is σ = 2687603162. Its totient is φ = 2687603160.

The previous prime is 2687603137. The next prime is 2687603167. The reversal of 2687603161 is 1613067862.

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., 2605592025 + 82011136 = 51045^2 + 9056^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687603161 - 2⁷ = 2687603033 is a prime.

It is not a weakly prime, because it can be changed into another prime (2687603167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1343801580 + 1343801581.

It is an arithmetic number, because the mean of its divisors is an integer number (1343801581).

Almost surely, 2^2687603161 is an apocalyptic number.

It is an amenable number.

2687603161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2687603161 is an equidigital number, since it uses as much as digits as its factorization.

2687603161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 2687603161 is about 51842.0983468069. The cubic root of 2687603161 is about 1390.3422308303.

The spelling of 2687603161 in words is "two billion, six hundred eighty-seven million, six hundred three thousand, one hundred sixty-one".