2664857 has 8 divisors (see below), whose sum is σ = 2882880. Its totient is φ = 2448720.

The previous prime is 2664847. The next prime is 2664859. The reversal of 2664857 is 7584662.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2664857 - 2⁶ = 2664793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2664857.

It is not an unprimeable number, because it can be changed into a prime (2664859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4382 + ... + 4952.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

2^2664857 is an apocalyptic number.

It is an amenable number.

2664857 is a deficient number, since it is larger than the sum of its proper divisors (218023).

2664857 is a wasteful number, since it uses less digits than its factorization.

2664857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943.

The product of its digits is 80640, while the sum is 38.

The square root of 2664857 is about 1632.4389728256. The cubic root of 2664857 is about 138.6408789519.

The spelling of 2664857 in words is "two million, six hundred sixty-four thousand, eight hundred fifty-seven".