768651253 has 2 divisors, whose sum is σ = 768651254. Its totient is φ = 768651252.

The previous prime is 768651223. The next prime is 768651319. The reversal of 768651253 is 352156867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708464689 + 60186564 = 26617^2 + 7758^2 .

It is a cyclic number.

It is not a de Polignac number, because 768651253 - 2²⁵ = 735096821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768651203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384325626 + 384325627.

It is an arithmetic number, because the mean of its divisors is an integer number (384325627).

Almost surely, 2^768651253 is an apocalyptic number.

It is an amenable number.

768651253 is a deficient number, since it is larger than the sum of its proper divisors (1).

768651253 is an equidigital number, since it uses as much as digits as its factorization.

768651253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The square root of 768651253 is about 27724.5604654068. The cubic root of 768651253 is about 916.0301745843.

The spelling of 768651253 in words is "seven hundred sixty-eight million, six hundred fifty-one thousand, two hundred fifty-three".