6929873864 has 16 divisors (see below), whose sum is σ = 12996923100. Its totient is φ = 3464027712.

The previous prime is 6929873831. The next prime is 6929873869. The reversal of 6929873864 is 4683789296.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6302772100 + 627101764 = 79390^2 + 25042^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6929873797 and 6929873806.

It is not an unprimeable number, because it can be changed into a prime (6929873869) 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, 80699 + ... + 142730.

Almost surely, 2^6929873864 is an apocalyptic number.

It is an amenable number.

6929873864 is a deficient number, since it is larger than the sum of its proper divisors (6067049236).

6929873864 is a wasteful number, since it uses less digits than its factorization.

6929873864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227312 (or 227308 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 62.

The square root of 6929873864 is about 83245.8639453036. The cubic root of 6929873864 is about 1906.5218045407.

The spelling of 6929873864 in words is "six billion, nine hundred twenty-nine million, eight hundred seventy-three thousand, eight hundred sixty-four".