780059945 has 32 divisors (see below), whose sum is σ = 1091543040. Its totient is φ = 524088000.

The previous prime is 780059921. The next prime is 780059957. The reversal of 780059945 is 549950087.

It is a de Polignac number, because none of the positive numbers 2^k-780059945 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 780059945.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1038320 + ... + 1039070.

It is an arithmetic number, because the mean of its divisors is an integer number (34110720).

Almost surely, 2^780059945 is an apocalyptic number.

It is an amenable number.

780059945 is a deficient number, since it is larger than the sum of its proper divisors (311483095).

780059945 is a wasteful number, since it uses less digits than its factorization.

780059945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 780059945 is about 27929.5532545725. The cubic root of 780059945 is about 920.5399889963.

The spelling of 780059945 in words is "seven hundred eighty million, fifty-nine thousand, nine hundred forty-five".