7681161 has 8 divisors (see below), whose sum is σ = 10844064. Its totient is φ = 4819520.

The previous prime is 7681153. The next prime is 7681169. The reversal of 7681161 is 1611867.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7681153) and next prime (7681169).

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 7681161 - 2³ = 7681153 is a prime.

It is a Curzon number.

7681161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7681169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75255 + ... + 75356.

It is an arithmetic number, because the mean of its divisors is an integer number (1355508).

Almost surely, 2^7681161 is an apocalyptic number.

It is an amenable number.

7681161 is a deficient number, since it is larger than the sum of its proper divisors (3162903).

7681161 is a wasteful number, since it uses less digits than its factorization.

7681161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150631.

The product of its digits is 2016, while the sum is 30.

The square root of 7681161 is about 2771.4907540889. The cubic root of 7681161 is about 197.3069073629.

The spelling of 7681161 in words is "seven million, six hundred eighty-one thousand, one hundred sixty-one".