2670688249 has 2 divisors, whose sum is σ = 2670688250. Its totient is φ = 2670688248.

The previous prime is 2670688193. The next prime is 2670688291. The reversal of 2670688249 is 9428860762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2635795600 + 34892649 = 51340^2 + 5907^2 .

It is a cyclic number.

It is not a de Polignac number, because 2670688249 - 2²³ = 2662299641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2670688196 and 2670688205.

It is not a weakly prime, because it can be changed into another prime (2670682249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335344124 + 1335344125.

It is an arithmetic number, because the mean of its divisors is an integer number (1335344125).

Almost surely, 2^2670688249 is an apocalyptic number.

It is an amenable number.

2670688249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2670688249 is an equidigital number, since it uses as much as digits as its factorization.

2670688249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The square root of 2670688249 is about 51678.7020831599. The cubic root of 2670688249 is about 1387.4193009256.

The spelling of 2670688249 in words is "two billion, six hundred seventy million, six hundred eighty-eight thousand, two hundred forty-nine".