768061261 has 4 divisors (see below), whose sum is σ = 837885024. Its totient is φ = 698237500.

The previous prime is 768061247. The next prime is 768061277. The reversal of 768061261 is 162160867.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 768061261 - 2²³ = 759672653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 768061261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768061061) 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 in 3 ways as a sum of consecutive naturals, for example, 34911865 + ... + 34911886.

It is an arithmetic number, because the mean of its divisors is an integer number (209471256).

Almost surely, 2^768061261 is an apocalyptic number.

It is an amenable number.

768061261 is a deficient number, since it is larger than the sum of its proper divisors (69823763).

768061261 is a wasteful number, since it uses less digits than its factorization.

768061261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69823762.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 768061261 is about 27713.9181820254. The cubic root of 768061261 is about 915.7957428186.

The spelling of 768061261 in words is "seven hundred sixty-eight million, sixty-one thousand, two hundred sixty-one".