2067664 has 10 divisors (see below), whose sum is σ = 4006130. Its totient is φ = 1033824.

The previous prime is 2067661. The next prime is 2067679. The reversal of 2067664 is 4667602.

It can be written as a sum of positive squares in only one way, i.e., 1459264 + 608400 = 1208^2 + 780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2067661) 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 as a sum of consecutive naturals, namely, 64599 + ... + 64630.

It is an arithmetic number, because the mean of its divisors is an integer number (400613).

2^2067664 is an apocalyptic number.

It is an amenable number.

2067664 is a deficient number, since it is larger than the sum of its proper divisors (1938466).

2067664 is a wasteful number, since it uses less digits than its factorization.

2067664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129237 (or 129231 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 2067664 is about 1437.9374117117. The cubic root of 2067664 is about 127.3972310409.

The spelling of 2067664 in words is "two million, sixty-seven thousand, six hundred sixty-four".