6872693981 has 8 divisors (see below), whose sum is σ = 6912735744. Its totient is φ = 6832694880.

The previous prime is 6872693941. The next prime is 6872693983. The reversal of 6872693981 is 1893962786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6872693981 is a prime.

It is a super-2 number, since 2×6872693981² = 94467845112947256722, which contains 22 as substring.

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 6872693981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6872693983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346961 + ... + 366233.

It is an arithmetic number, because the mean of its divisors is an integer number (864091968).

Almost surely, 2^6872693981 is an apocalyptic number.

It is an amenable number.

6872693981 is a deficient number, since it is larger than the sum of its proper divisors (40041763).

6872693981 is a wasteful number, since it uses less digits than its factorization.

6872693981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21331.

The product of its digits is 7838208, while the sum is 59.

The square root of 6872693981 is about 82901.7127748275. The cubic root of 6872693981 is about 1901.2636082880.

The spelling of 6872693981 in words is "six billion, eight hundred seventy-two million, six hundred ninety-three thousand, nine hundred eighty-one".