6987081 has 4 divisors (see below), whose sum is σ = 9316112. Its totient is φ = 4658052.

The previous prime is 6987077. The next prime is 6987083. The reversal of 6987081 is 1807896.

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 not a de Polignac number, because 6987081 - 2² = 6987077 is a prime.

It is a super-2 number, since 2×6987081² = 97638601801122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6987083) 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, 1164511 + ... + 1164516.

It is an arithmetic number, because the mean of its divisors is an integer number (2329028).

Almost surely, 2^6987081 is an apocalyptic number.

It is an amenable number.

6987081 is a deficient number, since it is larger than the sum of its proper divisors (2329031).

6987081 is a wasteful number, since it uses less digits than its factorization.

6987081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329030.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 6987081 is about 2643.3087220376. The cubic root of 6987081 is about 191.1753641017.

The spelling of 6987081 in words is "six million, nine hundred eighty-seven thousand, eighty-one".