8111649 has 32 divisors (see below), whose sum is σ = 13640704. Its totient is φ = 4173120.

The previous prime is 8111639. The next prime is 8111657. The reversal of 8111649 is 9461118.

8111649 = 57² + 58² + ... + 290².

8111649 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8111649 - 2⁸ = 8111393 is a prime.

8111649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8111639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11394 + ... + 12084.

It is an arithmetic number, because the mean of its divisors is an integer number (426272).

Almost surely, 2^8111649 is an apocalyptic number.

It is an amenable number.

8111649 is a deficient number, since it is larger than the sum of its proper divisors (5529055).

8111649 is a wasteful number, since it uses less digits than its factorization.

8111649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757.

The product of its digits is 1728, while the sum is 30.

The square root of 8111649 is about 2848.0956795726. The cubic root of 8111649 is about 200.9261132850.

The spelling of 8111649 in words is "eight million, one hundred eleven thousand, six hundred forty-nine".