6457838 has 8 divisors (see below), whose sum is σ = 9869688. Its totient is φ = 3167944.

The previous prime is 6457831. The next prime is 6457859. The reversal of 6457838 is 8387546.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 6457795 and 6457804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6457831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30356 + ... + 30567.

It is an arithmetic number, because the mean of its divisors is an integer number (1233711).

Almost surely, 2^6457838 is an apocalyptic number.

6457838 is a deficient number, since it is larger than the sum of its proper divisors (3411850).

6457838 is a wasteful number, since it uses less digits than its factorization.

6457838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60978.

The product of its digits is 161280, while the sum is 41.

The square root of 6457838 is about 2541.2276560749. The cubic root of 6457838 is about 186.2211690580.

The spelling of 6457838 in words is "six million, four hundred fifty-seven thousand, eight hundred thirty-eight".