6861695728 has 40 divisors (see below), whose sum is σ = 13375143936. Its totient is φ = 3410097600.

The previous prime is 6861695699. The next prime is 6861695747. The reversal of 6861695728 is 8275961686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3249393 + ... + 3251503.

Almost surely, 2^6861695728 is an apocalyptic number.

It is an amenable number.

6861695728 is a deficient number, since it is larger than the sum of its proper divisors (6513448208).

6861695728 is a wasteful number, since it uses less digits than its factorization.

6861695728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253 (or 3247 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 58.

The square root of 6861695728 is about 82835.3531289630. The cubic root of 6861695728 is about 1900.2488804172.

The spelling of 6861695728 in words is "six billion, eight hundred sixty-one million, six hundred ninety-five thousand, seven hundred twenty-eight".