768857633 has 2 divisors, whose sum is σ = 768857634. Its totient is φ = 768857632.

The previous prime is 768857597. The next prime is 768857647. The reversal of 768857633 is 336758867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 621405184 + 147452449 = 24928^2 + 12143^2 .

It is a cyclic number.

It is not a de Polignac number, because 768857633 - 2⁶ = 768857569 is a prime.

It is a super-2 number, since 2×768857633² = 1182284119644725378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (768857533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384428816 + 384428817.

It is an arithmetic number, because the mean of its divisors is an integer number (384428817).

Almost surely, 2^768857633 is an apocalyptic number.

It is an amenable number.

768857633 is a deficient number, since it is larger than the sum of its proper divisors (1).

768857633 is an equidigital number, since it uses as much as digits as its factorization.

768857633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 53.

The square root of 768857633 is about 27728.2821862444. The cubic root of 768857633 is about 916.1121508119.

The spelling of 768857633 in words is "seven hundred sixty-eight million, eight hundred fifty-seven thousand, six hundred thirty-three".