6812628709 has 4 divisors (see below), whose sum is σ = 6957578304. Its totient is φ = 6667679116.

The previous prime is 6812628703. The next prime is 6812628743. The reversal of 6812628709 is 9078262186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6812628709 - 2⁹ = 6812628197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6812628703) 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, 72474727 + ... + 72474820.

It is an arithmetic number, because the mean of its divisors is an integer number (1739394576).

Almost surely, 2^6812628709 is an apocalyptic number.

It is an amenable number.

6812628709 is a deficient number, since it is larger than the sum of its proper divisors (144949595).

6812628709 is a wasteful number, since it uses less digits than its factorization.

6812628709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144949594.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 6812628709 is about 82538.6497890534. The cubic root of 6812628709 is about 1895.7085701498.

The spelling of 6812628709 in words is "six billion, eight hundred twelve million, six hundred twenty-eight thousand, seven hundred nine".