780295045 has 4 divisors (see below), whose sum is σ = 936354060. Its totient is φ = 624236032.

The previous prime is 780295037. The next prime is 780295049. The reversal of 780295045 is 540592087.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 335549124 + 444745921 = 18318^2 + 21089^2 .

It is a cyclic number.

It is not a de Polignac number, because 780295045 - 2³ = 780295037 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 780294989 and 780295007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780295049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78029500 + ... + 78029509.

It is an arithmetic number, because the mean of its divisors is an integer number (234088515).

Almost surely, 2^780295045 is an apocalyptic number.

It is an amenable number.

780295045 is a deficient number, since it is larger than the sum of its proper divisors (156059015).

780295045 is a wasteful number, since it uses less digits than its factorization.

780295045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156059014.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 780295045 is about 27933.7617409471. The cubic root of 780295045 is about 920.6324593312.

The spelling of 780295045 in words is "seven hundred eighty million, two hundred ninety-five thousand, forty-five".