712776813 has 16 divisors (see below), whose sum is σ = 1093430400. Its totient is φ = 404565696.

The previous prime is 712776809. The next prime is 712776821. The reversal of 712776813 is 318677217.

It is a happy number.

It is not a de Polignac number, because 712776813 - 2² = 712776809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712776803) 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, 110770 + ... + 117027.

It is an arithmetic number, because the mean of its divisors is an integer number (68339400).

Almost surely, 2^712776813 is an apocalyptic number.

It is an amenable number.

712776813 is a deficient number, since it is larger than the sum of its proper divisors (380653587).

712776813 is a wasteful number, since it uses less digits than its factorization.

712776813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227956.

The product of its digits is 98784, while the sum is 42.

The square root of 712776813 is about 26697.8803091182. The cubic root of 712776813 is about 893.2736456588.

The spelling of 712776813 in words is "seven hundred twelve million, seven hundred seventy-six thousand, eight hundred thirteen".