6864657 has 8 divisors (see below), whose sum is σ = 9166080. Its totient is φ = 4569840.

The previous prime is 6864653. The next prime is 6864661. The reversal of 6864657 is 7564686.

It is a happy number.

6864657 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6864653) and next prime (6864661).

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

It is not a de Polignac number, because 6864657 - 2² = 6864653 is a prime.

6864657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6864653) 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, 1819 + ... + 4127.

It is an arithmetic number, because the mean of its divisors is an integer number (1145760).

Almost surely, 2^6864657 is an apocalyptic number.

It is an amenable number.

6864657 is a deficient number, since it is larger than the sum of its proper divisors (2301423).

6864657 is a wasteful number, since it uses less digits than its factorization.

6864657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303.

The product of its digits is 241920, while the sum is 42.

The square root of 6864657 is about 2620.0490453425. The cubic root of 6864657 is about 190.0522201800.

The spelling of 6864657 in words is "six million, eight hundred sixty-four thousand, six hundred fifty-seven".