6991461 has 16 divisors (see below), whose sum is σ = 10693120. Its totient is φ = 4510080.

The previous prime is 6991459. The next prime is 6991463. The reversal of 6991461 is 1641996.

It is an interprime number because it is at equal distance from previous prime (6991459) and next prime (6991463).

It is not a de Polignac number, because 6991461 - 2¹ = 6991459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6991463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3340 + ... + 5013.

It is an arithmetic number, because the mean of its divisors is an integer number (668320).

Almost surely, 2^6991461 is an apocalyptic number.

It is an amenable number.

6991461 is a deficient number, since it is larger than the sum of its proper divisors (3701659).

6991461 is a wasteful number, since it uses less digits than its factorization.

6991461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8393 (or 8387 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 6991461 is about 2644.1370993199. The cubic root of 6991461 is about 191.2153032020.

The spelling of 6991461 in words is "six million, nine hundred ninety-one thousand, four hundred sixty-one".