2685758947 has 2 divisors, whose sum is σ = 2685758948. Its totient is φ = 2685758946.

The previous prime is 2685758909. The next prime is 2685758969. The reversal of 2685758947 is 7498575862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2685758947 - 2²⁷ = 2551541219 is a prime.

It is a super-2 number, since 2×2685758947² = 14426602242781097618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2685708947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342879473 + 1342879474.

It is an arithmetic number, because the mean of its divisors is an integer number (1342879474).

Almost surely, 2^2685758947 is an apocalyptic number.

2685758947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685758947 is an equidigital number, since it uses as much as digits as its factorization.

2685758947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33868800, while the sum is 61.

The square root of 2685758947 is about 51824.3084565535. The cubic root of 2685758947 is about 1390.0241437761.

The spelling of 2685758947 in words is "two billion, six hundred eighty-five million, seven hundred fifty-eight thousand, nine hundred forty-seven".