8111641 has 4 divisors (see below), whose sum is σ = 8214400. Its totient is φ = 8008884.

The previous prime is 8111639. The next prime is 8111657. The reversal of 8111641 is 1461118.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1461118 = 2 ⋅730559.

It is a cyclic number.

It is not a de Polignac number, because 8111641 - 2¹ = 8111639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8111611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51261 + ... + 51418.

It is an arithmetic number, because the mean of its divisors is an integer number (2053600).

Almost surely, 2^8111641 is an apocalyptic number.

It is an amenable number.

8111641 is a deficient number, since it is larger than the sum of its proper divisors (102759).

8111641 is a wasteful number, since it uses less digits than its factorization.

8111641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102758.

The product of its digits is 192, while the sum is 22.

The square root of 8111641 is about 2848.0942751250. The cubic root of 8111641 is about 200.9260472314.

Adding to 8111641 its reverse (1461118), we get a palindrome (9572759).

The spelling of 8111641 in words is "eight million, one hundred eleven thousand, six hundred forty-one".