6872981 has 8 divisors (see below), whose sum is σ = 7366464. Its totient is φ = 6389440.

The previous prime is 6872963. The next prime is 6873001. The reversal of 6872981 is 1892786.

6872981 = 433² + 434² + ... + 466².

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-6872981 is a prime.

It is a super-2 number, since 2×6872981² = 94475735652722, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6872911) 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, 1025 + ... + 3846.

It is an arithmetic number, because the mean of its divisors is an integer number (920808).

Almost surely, 2^6872981 is an apocalyptic number.

It is an amenable number.

6872981 is a deficient number, since it is larger than the sum of its proper divisors (493483).

6872981 is a wasteful number, since it uses less digits than its factorization.

6872981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971.

The product of its digits is 48384, while the sum is 41.

The square root of 6872981 is about 2621.6370839611. The cubic root of 6872981 is about 190.1290074920.

The spelling of 6872981 in words is "six million, eight hundred seventy-two thousand, nine hundred eighty-one".