6957861 has 4 divisors (see below), whose sum is σ = 9277152. Its totient is φ = 4638572.

The previous prime is 6957859. The next prime is 6957869. The reversal of 6957861 is 1687596.

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 a cyclic number.

It is not a de Polignac number, because 6957861 - 2¹ = 6957859 is a prime.

It is a D-number.

6957861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6957869) 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 3 ways as a sum of consecutive naturals, for example, 1159641 + ... + 1159646.

It is an arithmetic number, because the mean of its divisors is an integer number (2319288).

Almost surely, 2^6957861 is an apocalyptic number.

It is an amenable number.

6957861 is a deficient number, since it is larger than the sum of its proper divisors (2319291).

6957861 is a wasteful number, since it uses less digits than its factorization.

6957861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319290.

The product of its digits is 90720, while the sum is 42.

The square root of 6957861 is about 2637.7757675739. The cubic root of 6957861 is about 190.9084930305.

The spelling of 6957861 in words is "six million, nine hundred fifty-seven thousand, eight hundred sixty-one".