8161611 has 8 divisors (see below), whose sum is σ = 10928640. Its totient is φ = 5417832.

The previous prime is 8161607. The next prime is 8161627. The reversal of 8161611 is 1161618.

8161611 is digitally balanced in base 4, 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 not a de Polignac number, because 8161611 - 2² = 8161607 is a prime.

It is a super-2 number, since 2×8161611² = 133223788230642, which contains 22 as substring.

8161611 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8161631) 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, 4975 + ... + 6408.

It is an arithmetic number, because the mean of its divisors is an integer number (1366080).

Almost surely, 2^8161611 is an apocalyptic number.

8161611 is a deficient number, since it is larger than the sum of its proper divisors (2767029).

8161611 is a wasteful number, since it uses less digits than its factorization.

8161611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11625.

The product of its digits is 288, while the sum is 24.

The square root of 8161611 is about 2856.8533389028. The cubic root of 8161611 is about 201.3377899715.

The spelling of 8161611 in words is "eight million, one hundred sixty-one thousand, six hundred eleven".