768304621 has 4 divisors (see below), whose sum is σ = 878062432. Its totient is φ = 658546812.

The previous prime is 768304597. The next prime is 768304639. The reversal of 768304621 is 126403867.

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 not a de Polignac number, because 768304621 - 2⁹ = 768304109 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 (768304021) 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, 54878895 + ... + 54878908.

It is an arithmetic number, because the mean of its divisors is an integer number (219515608).

Almost surely, 2^768304621 is an apocalyptic number.

It is an amenable number.

768304621 is a deficient number, since it is larger than the sum of its proper divisors (109757811).

768304621 is a wasteful number, since it uses less digits than its factorization.

768304621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109757810.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 768304621 is about 27718.3084079819. The cubic root of 768304621 is about 915.8924558149.

The spelling of 768304621 in words is "seven hundred sixty-eight million, three hundred four thousand, six hundred twenty-one".