6997081 has 16 divisors (see below), whose sum is σ = 9120384. Its totient is φ = 5209344.

The previous prime is 6997069. The next prime is 6997087. The reversal of 6997081 is 1807996.

It is not a de Polignac number, because 6997081 - 2¹⁵ = 6964313 is a prime.

It is a super-2 number, since 2×6997081² = 97918285041122, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (6997087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715 + ... + 3808.

It is an arithmetic number, because the mean of its divisors is an integer number (570024).

Almost surely, 2^6997081 is an apocalyptic number.

It is an amenable number.

6997081 is a deficient number, since it is larger than the sum of its proper divisors (2123303).

6997081 is a wasteful number, since it uses less digits than its factorization.

6997081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 6997081 is about 2645.1996143959. The cubic root of 6997081 is about 191.2665248370.

The spelling of 6997081 in words is "six million, nine hundred ninety-seven thousand, eighty-one".