611006161 has 4 divisors (see below), whose sum is σ = 643164400. Its totient is φ = 578847924.

The previous prime is 611006159. The next prime is 611006167. The reversal of 611006161 is 161600116.

611006161 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 611006161 - 2¹ = 611006159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611006167) 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, 16079091 + ... + 16079128.

It is an arithmetic number, because the mean of its divisors is an integer number (160791100).

Almost surely, 2^611006161 is an apocalyptic number.

It is an amenable number.

611006161 is a deficient number, since it is larger than the sum of its proper divisors (32158239).

611006161 is a wasteful number, since it uses less digits than its factorization.

611006161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32158238.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 611006161 is about 24718.5388119929. The cubic root of 611006161 is about 848.5586465374.

Adding to 611006161 its reverse (161600116), we get a palindrome (772606277).

The spelling of 611006161 in words is "six hundred eleven million, six thousand, one hundred sixty-one".