768408145 has 4 divisors (see below), whose sum is σ = 922089780. Its totient is φ = 614726512.

The previous prime is 768408131. The next prime is 768408149. The reversal of 768408145 is 541804867.

768408145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541804867 = 61 ⋅8882047.

It can be written as a sum of positive squares in 2 ways, for example, as 503239489 + 265168656 = 22433^2 + 16284^2 .

It is a cyclic number.

It is not a de Polignac number, because 768408145 - 2¹¹ = 768406097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (768408149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76840810 + ... + 76840819.

It is an arithmetic number, because the mean of its divisors is an integer number (230522445).

Almost surely, 2^768408145 is an apocalyptic number.

It is an amenable number.

768408145 is a deficient number, since it is larger than the sum of its proper divisors (153681635).

768408145 is a wasteful number, since it uses less digits than its factorization.

768408145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153681634.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 768408145 is about 27720.1757750560. The cubic root of 768408145 is about 915.9335907977.

The spelling of 768408145 in words is "seven hundred sixty-eight million, four hundred eight thousand, one hundred forty-five".