6319961 has 2 divisors, whose sum is σ = 6319962. Its totient is φ = 6319960.

The previous prime is 6319927. The next prime is 6319981. The reversal of 6319961 is 1699136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3534400 + 2785561 = 1880^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 6319961 - 2⁶ = 6319897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6319981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3159980 + 3159981.

It is an arithmetic number, because the mean of its divisors is an integer number (3159981).

Almost surely, 2^6319961 is an apocalyptic number.

It is an amenable number.

6319961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6319961 is an equidigital number, since it uses as much as digits as its factorization.

6319961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The square root of 6319961 is about 2513.9532612998. The cubic root of 6319961 is about 184.8863290018.

The spelling of 6319961 in words is "six million, three hundred nineteen thousand, nine hundred sixty-one".