768647461 has 8 divisors (see below), whose sum is σ = 772255640. Its totient is φ = 765047808.

The previous prime is 768647437. The next prime is 768647483. The reversal of 768647461 is 164746867.

It can be written as a sum of positive squares in 4 ways, for example, as 67404100 + 701243361 = 8210^2 + 26481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 768647461 - 2²⁹ = 231776549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768647161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237325 + ... + 240541.

It is an arithmetic number, because the mean of its divisors is an integer number (96531955).

Almost surely, 2^768647461 is an apocalyptic number.

It is an amenable number.

768647461 is a deficient number, since it is larger than the sum of its proper divisors (3608179).

768647461 is a wasteful number, since it uses less digits than its factorization.

768647461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4263.

The product of its digits is 1354752, while the sum is 49.

The square root of 768647461 is about 27724.4920783051. The cubic root of 768647461 is about 916.0286682262.

The spelling of 768647461 in words is "seven hundred sixty-eight million, six hundred forty-seven thousand, four hundred sixty-one".