2789700643 has 2 divisors, whose sum is σ = 2789700644. Its totient is φ = 2789700642.

The previous prime is 2789700623. The next prime is 2789700673. The reversal of 2789700643 is 3460079872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2789700643 - 2⁵ = 2789700611 is a prime.

It is a super-2 number, since 2×2789700643² = 15564859355109226898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2789700593 and 2789700602.

It is not a weakly prime, because it can be changed into another prime (2789700623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394850321 + 1394850322.

It is an arithmetic number, because the mean of its divisors is an integer number (1394850322).

Almost surely, 2^2789700643 is an apocalyptic number.

2789700643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2789700643 is an equidigital number, since it uses as much as digits as its factorization.

2789700643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 2789700643 is about 52817.6167864473. The cubic root of 2789700643 is about 1407.7294649266.

The spelling of 2789700643 in words is "two billion, seven hundred eighty-nine million, seven hundred thousand, six hundred forty-three".