780276013 has 24 divisors (see below), whose sum is σ = 917227584. Its totient is φ = 658022400.

The previous prime is 780276011. The next prime is 780276019. The reversal of 780276013 is 310672087.

It is not a de Polignac number, because 780276013 - 2¹ = 780276011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 780276013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780276011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223981 + ... + 227437.

It is an arithmetic number, because the mean of its divisors is an integer number (38217816).

Almost surely, 2^780276013 is an apocalyptic number.

It is an amenable number.

780276013 is a deficient number, since it is larger than the sum of its proper divisors (136951571).

780276013 is a wasteful number, since it uses less digits than its factorization.

780276013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3573 (or 3556 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 780276013 is about 27933.4210758367. The cubic root of 780276013 is about 920.6249742910.

The spelling of 780276013 in words is "seven hundred eighty million, two hundred seventy-six thousand, thirteen".