2167664 has 10 divisors (see below), whose sum is σ = 4199880. Its totient is φ = 1083824.

The previous prime is 2167661. The next prime is 2167703. The reversal of 2167664 is 4667612.

It is a self number, because there is not a number n which added to its sum of digits gives 2167664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2167661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67724 + ... + 67755.

It is an arithmetic number, because the mean of its divisors is an integer number (419988).

2^2167664 is an apocalyptic number.

It is an amenable number.

2167664 is a deficient number, since it is larger than the sum of its proper divisors (2032216).

2167664 is a wasteful number, since it uses less digits than its factorization.

2167664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135487 (or 135481 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 2167664 is about 1472.2988827001. The cubic root of 2167664 is about 129.4187860070.

The spelling of 2167664 in words is "two million, one hundred sixty-seven thousand, six hundred sixty-four".