766627243 has 2 divisors, whose sum is σ = 766627244. Its totient is φ = 766627242.

The previous prime is 766627231. The next prime is 766627319. The reversal of 766627243 is 342726667.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766627243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 766627243.

It is not a weakly prime, because it can be changed into another prime (766627343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383313621 + 383313622.

It is an arithmetic number, because the mean of its divisors is an integer number (383313622).

Almost surely, 2^766627243 is an apocalyptic number.

766627243 is a deficient number, since it is larger than the sum of its proper divisors (1).

766627243 is an equidigital number, since it uses as much as digits as its factorization.

766627243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 43.

The square root of 766627243 is about 27688.0342928132. The cubic root of 766627243 is about 915.2254385940.

The spelling of 766627243 in words is "seven hundred sixty-six million, six hundred twenty-seven thousand, two hundred forty-three".