768749243 has 2 divisors, whose sum is σ = 768749244. Its totient is φ = 768749242.

The previous prime is 768749209. The next prime is 768749251. The reversal of 768749243 is 342947867.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 768749243 - 2¹⁰ = 768748219 is a prime.

It is a super-2 number, since 2×768749243² = 1181950797226146098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 768749191 and 768749200.

It is not a weakly prime, because it can be changed into another prime (768749543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384374621 + 384374622.

It is an arithmetic number, because the mean of its divisors is an integer number (384374622).

Almost surely, 2^768749243 is an apocalyptic number.

768749243 is a deficient number, since it is larger than the sum of its proper divisors (1).

768749243 is an equidigital number, since it uses as much as digits as its factorization.

768749243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 50.

The square root of 768749243 is about 27726.3276147419. The cubic root of 768749243 is about 916.0690990347.

The spelling of 768749243 in words is "seven hundred sixty-eight million, seven hundred forty-nine thousand, two hundred forty-three".