2664668 has 6 divisors (see below), whose sum is σ = 4663176. Its totient is φ = 1332332.

The previous prime is 2664661. The next prime is 2664689. The reversal of 2664668 is 8664662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333080 + ... + 333087.

It is an arithmetic number, because the mean of its divisors is an integer number (777196).

2^2664668 is an apocalyptic number.

It is an amenable number.

2664668 is a deficient number, since it is larger than the sum of its proper divisors (1998508).

2664668 is a wasteful number, since it uses less digits than its factorization.

2664668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666171 (or 666169 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 2664668 is about 1632.3810829583. The cubic root of 2664668 is about 138.6376012594.

The spelling of 2664668 in words is "two million, six hundred sixty-four thousand, six hundred sixty-eight".