768501397 has 2 divisors, whose sum is σ = 768501398. Its totient is φ = 768501396.

The previous prime is 768501353. The next prime is 768501403. The reversal of 768501397 is 793105867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 466819236 + 301682161 = 21606^2 + 17369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-768501397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768501317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384250698 + 384250699.

It is an arithmetic number, because the mean of its divisors is an integer number (384250699).

Almost surely, 2^768501397 is an apocalyptic number.

It is an amenable number.

768501397 is a deficient number, since it is larger than the sum of its proper divisors (1).

768501397 is an equidigital number, since it uses as much as digits as its factorization.

768501397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 768501397 is about 27721.8577479937. The cubic root of 768501397 is about 915.9706410662.

The spelling of 768501397 in words is "seven hundred sixty-eight million, five hundred one thousand, three hundred ninety-seven".