2311664 has 10 divisors (see below), whose sum is σ = 4478880. Its totient is φ = 1155824.

The previous prime is 2311657. The next prime is 2311667. The reversal of 2311664 is 4661132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72224 + ... + 72255.

It is an arithmetic number, because the mean of its divisors is an integer number (447888).

2^2311664 is an apocalyptic number.

It is an amenable number.

2311664 is a deficient number, since it is larger than the sum of its proper divisors (2167216).

2311664 is a wasteful number, since it uses less digits than its factorization.

2311664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144487 (or 144481 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 2311664 is about 1520.4157326205. The cubic root of 2311664 is about 132.2233744639.

Adding to 2311664 its reverse (4661132), we get a palindrome (6972796).

The spelling of 2311664 in words is "two million, three hundred eleven thousand, six hundred sixty-four".