80768745 has 20 divisors (see below), whose sum is σ = 144786180. Its totient is φ = 43076448.

The previous prime is 80768719. The next prime is 80768783. The reversal of 80768745 is 54786708.

It can be written as a sum of positive squares in 2 ways, for example, as 33489369 + 47279376 = 5787^2 + 6876^2 .

It is not a de Polignac number, because 80768745 - 2⁵ = 80768713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 80768745.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 99310 + ... + 100119.

It is an arithmetic number, because the mean of its divisors is an integer number (7239309).

Almost surely, 2^80768745 is an apocalyptic number.

It is an amenable number.

80768745 is a deficient number, since it is larger than the sum of its proper divisors (64017435).

80768745 is a wasteful number, since it uses less digits than its factorization.

80768745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199446 (or 199437 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 80768745 is about 8987.1433169834. The cubic root of 80768745 is about 432.2627163568.

The spelling of 80768745 in words is "eighty million, seven hundred sixty-eight thousand, seven hundred forty-five".