168609047 has 2 divisors, whose sum is σ = 168609048. Its totient is φ = 168609046.

The previous prime is 168609041. The next prime is 168609061. The reversal of 168609047 is 740906861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168609047 - 2²² = 164414743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168608995 and 168609013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168609041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84304523 + 84304524.

It is an arithmetic number, because the mean of its divisors is an integer number (84304524).

Almost surely, 2^168609047 is an apocalyptic number.

168609047 is a deficient number, since it is larger than the sum of its proper divisors (1).

168609047 is an equidigital number, since it uses as much as digits as its factorization.

168609047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 168609047 is about 12984.9546398900. The cubic root of 168609047 is about 552.4508225920.

The spelling of 168609047 in words is "one hundred sixty-eight million, six hundred nine thousand, forty-seven".