6731961 has 4 divisors (see below), whose sum is σ = 8975952. Its totient is φ = 4487972.

The previous prime is 6731957. The next prime is 6731981. The reversal of 6731961 is 1691376.

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 6731961 - 2² = 6731957 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6731941) 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 3 ways as a sum of consecutive naturals, for example, 1121991 + ... + 1121996.

It is an arithmetic number, because the mean of its divisors is an integer number (2243988).

Almost surely, 2^6731961 is an apocalyptic number.

It is an amenable number.

6731961 is a deficient number, since it is larger than the sum of its proper divisors (2243991).

6731961 is a wasteful number, since it uses less digits than its factorization.

6731961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243990.

The product of its digits is 6804, while the sum is 33.

The square root of 6731961 is about 2594.6022816609. The cubic root of 6731961 is about 188.8196538389.

The spelling of 6731961 in words is "six million, seven hundred thirty-one thousand, nine hundred sixty-one".