768728311 has 8 divisors (see below), whose sum is σ = 848053584. Its totient is φ = 692287680.

The previous prime is 768728309. The next prime is 768728327. The reversal of 768728311 is 113827867.

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 768728311 - 2¹ = 768728309 is a prime.

It is a super-2 number, since 2×768728311² = 1181886432265825442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768728351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720601 + ... + 721666.

It is an arithmetic number, because the mean of its divisors is an integer number (106006698).

Almost surely, 2^768728311 is an apocalyptic number.

768728311 is a deficient number, since it is larger than the sum of its proper divisors (79325273).

768728311 is a wasteful number, since it uses less digits than its factorization.

768728311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442321.

The product of its digits is 112896, while the sum is 43.

The square root of 768728311 is about 27725.9501370106. The cubic root of 768728311 is about 916.0607845192.

The spelling of 768728311 in words is "seven hundred sixty-eight million, seven hundred twenty-eight thousand, three hundred eleven".