165656147 has 2 divisors, whose sum is σ = 165656148. Its totient is φ = 165656146.

The previous prime is 165656137. The next prime is 165656159. The reversal of 165656147 is 741656561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165656147 - 2⁶ = 165656083 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (165656107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82828073 + 82828074.

It is an arithmetic number, because the mean of its divisors is an integer number (82828074).

Almost surely, 2^165656147 is an apocalyptic number.

165656147 is a deficient number, since it is larger than the sum of its proper divisors (1).

165656147 is an equidigital number, since it uses as much as digits as its factorization.

165656147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 165656147 is about 12870.7477249770. The cubic root of 165656147 is about 549.2067318971.

The spelling of 165656147 in words is "one hundred sixty-five million, six hundred fifty-six thousand, one hundred forty-seven".