6159691 has 2 divisors, whose sum is σ = 6159692. Its totient is φ = 6159690.

The previous prime is 6159689. The next prime is 6159697. The reversal of 6159691 is 1969516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6159691 - 2¹ = 6159689 is a prime.

Together with 6159689, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6159691.

It is not a weakly prime, because it can be changed into another prime (6159697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3079845 + 3079846.

It is an arithmetic number, because the mean of its divisors is an integer number (3079846).

Almost surely, 2^6159691 is an apocalyptic number.

6159691 is a deficient number, since it is larger than the sum of its proper divisors (1).

6159691 is an equidigital number, since it uses as much as digits as its factorization.

6159691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14580, while the sum is 37.

The square root of 6159691 is about 2481.8724785935. The cubic root of 6159691 is about 183.3100638970.

The spelling of 6159691 in words is "six million, one hundred fifty-nine thousand, six hundred ninety-one".