601662161 has 4 divisors (see below), whose sum is σ = 608422500. Its totient is φ = 594901824.

The previous prime is 601662157. The next prime is 601662163. The reversal of 601662161 is 161266106.

601662161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161266106 = 2 ⋅80633053.

It can be written as a sum of positive squares in 2 ways, for example, as 31360000 + 570302161 = 5600^2 + 23881^2 .

It is a cyclic number.

It is not a de Polignac number, because 601662161 - 2² = 601662157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (601662163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3380036 + ... + 3380213.

It is an arithmetic number, because the mean of its divisors is an integer number (152105625).

Almost surely, 2^601662161 is an apocalyptic number.

It is an amenable number.

601662161 is a deficient number, since it is larger than the sum of its proper divisors (6760339).

601662161 is an equidigital number, since it uses as much as digits as its factorization.

601662161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760338.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 601662161 is about 24528.8026817454. The cubic root of 601662161 is about 844.2107921381.

The spelling of 601662161 in words is "six hundred one million, six hundred sixty-two thousand, one hundred sixty-one".