611940161 has 8 divisors (see below), whose sum is σ = 699532224. Its totient is φ = 524391120.

The previous prime is 611940157. The next prime is 611940187. The reversal of 611940161 is 161049116.

611940161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611940161 - 2² = 611940157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611940101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30071 + ... + 46131.

It is an arithmetic number, because the mean of its divisors is an integer number (87441528).

Almost surely, 2^611940161 is an apocalyptic number.

It is an amenable number.

611940161 is a deficient number, since it is larger than the sum of its proper divisors (87592063).

611940161 is a wasteful number, since it uses less digits than its factorization.

611940161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21511.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 611940161 is about 24737.4243000358. The cubic root of 611940161 is about 848.9908027248.

Adding to 611940161 its reverse (161049116), we get a palindrome (772989277).

The spelling of 611940161 in words is "six hundred eleven million, nine hundred forty thousand, one hundred sixty-one".