768043961 has 4 divisors (see below), whose sum is σ = 773907024. Its totient is φ = 762180900.

The previous prime is 768043957. The next prime is 768043987. The reversal of 768043961 is 169340867.

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 768043961 - 2² = 768043957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768043261) 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, 2931335 + ... + 2931596.

It is an arithmetic number, because the mean of its divisors is an integer number (193476756).

Almost surely, 2^768043961 is an apocalyptic number.

It is an amenable number.

768043961 is a deficient number, since it is larger than the sum of its proper divisors (5863063).

768043961 is a wasteful number, since it uses less digits than its factorization.

768043961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5863062.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 768043961 is about 27713.6060627267. The cubic root of 768043961 is about 915.7888668978.

The spelling of 768043961 in words is "seven hundred sixty-eight million, forty-three thousand, nine hundred sixty-one".