780311045 has 16 divisors (see below), whose sum is σ = 951125760. Its totient is φ = 614462784.

The previous prime is 780311009. The next prime is 780311047. The reversal of 780311045 is 540113087.

It is a cyclic number.

It is not a de Polignac number, because 780311045 - 2¹⁴ = 780294661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 780310999 and 780311017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780311047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134219 + ... + 139911.

It is an arithmetic number, because the mean of its divisors is an integer number (59445360).

Almost surely, 2^780311045 is an apocalyptic number.

It is an amenable number.

780311045 is a deficient number, since it is larger than the sum of its proper divisors (170814715).

780311045 is a wasteful number, since it uses less digits than its factorization.

780311045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 780311045 is about 27934.0481312680. The cubic root of 780311045 is about 920.6387518307.

The spelling of 780311045 in words is "seven hundred eighty million, three hundred eleven thousand, forty-five".