2140664 has 16 divisors (see below), whose sum is σ = 4152600. Its totient is φ = 1033312.

The previous prime is 2140637. The next prime is 2140681. The reversal of 2140664 is 4660412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4382 + ... + 4845.

2^2140664 is an apocalyptic number.

It is an amenable number.

2140664 is a deficient number, since it is larger than the sum of its proper divisors (2011936).

2140664 is a wasteful number, since it uses less digits than its factorization.

2140664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9262 (or 9258 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2140664 is about 1463.1008167587. The cubic root of 2140664 is about 128.8792010598.

The spelling of 2140664 in words is "two million, one hundred forty thousand, six hundred sixty-four".