6139697 has 2 divisors, whose sum is σ = 6139698. Its totient is φ = 6139696.

The previous prime is 6139691. The next prime is 6139699. The reversal of 6139697 is 7969316.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6105841 + 33856 = 2471^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 6139697 - 2⁴ = 6139681 is a prime.

Together with 6139699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6139691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3069848 + 3069849.

It is an arithmetic number, because the mean of its divisors is an integer number (3069849).

Almost surely, 2^6139697 is an apocalyptic number.

It is an amenable number.

6139697 is a deficient number, since it is larger than the sum of its proper divisors (1).

6139697 is an equidigital number, since it uses as much as digits as its factorization.

6139697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 41.

The square root of 6139697 is about 2477.8411974943. The cubic root of 6139697 is about 183.1115109635. Note that the first 3 decimals are identical.

The spelling of 6139697 in words is "six million, one hundred thirty-nine thousand, six hundred ninety-seven".