2587766249 has 2 divisors, whose sum is σ = 2587766250. Its totient is φ = 2587766248.

The previous prime is 2587766243. The next prime is 2587766327. The reversal of 2587766249 is 9426677852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2585010649 + 2755600 = 50843^2 + 1660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2587766249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2587766194 and 2587766203.

It is not a weakly prime, because it can be changed into another prime (2587766243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1293883124 + 1293883125.

It is an arithmetic number, because the mean of its divisors is an integer number (1293883125).

Almost surely, 2^2587766249 is an apocalyptic number.

It is an amenable number.

2587766249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2587766249 is an equidigital number, since it uses as much as digits as its factorization.

2587766249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 56.

The square root of 2587766249 is about 50870.0918910120. The cubic root of 2587766249 is about 1372.9087768395.

The spelling of 2587766249 in words is "two billion, five hundred eighty-seven million, seven hundred sixty-six thousand, two hundred forty-nine".