768147155 has 16 divisors (see below), whose sum is σ = 934809120. Its totient is φ = 605860608.

The previous prime is 768147151. The next prime is 768147187. The reversal of 768147155 is 551741867.

It is a cyclic number.

It is not a de Polignac number, because 768147155 - 2² = 768147151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (768147151) 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 15 ways as a sum of consecutive naturals, for example, 234509 + ... + 237761.

It is an arithmetic number, because the mean of its divisors is an integer number (58425570).

Almost surely, 2^768147155 is an apocalyptic number.

768147155 is a deficient number, since it is larger than the sum of its proper divisors (166661965).

768147155 is a wasteful number, since it uses less digits than its factorization.

768147155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910.

The product of its digits is 235200, while the sum is 44.

The square root of 768147155 is about 27715.4677932738. The cubic root of 768147155 is about 915.8298800380.

The spelling of 768147155 in words is "seven hundred sixty-eight million, one hundred forty-seven thousand, one hundred fifty-five".