6857400 has 96 divisors (see below), whose sum is σ = 23212800. Its totient is φ = 1660800.

The previous prime is 6857387. The next prime is 6857407. The reversal of 6857400 is 47586.

It is a happy number.

6857400 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6857407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6081 + ... + 7119.

It is an arithmetic number, because the mean of its divisors is an integer number (241800).

Almost surely, 2^6857400 is an apocalyptic number.

6857400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6857400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11606400).

6857400 is an abundant number, since it is smaller than the sum of its proper divisors (16355400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6857400 is a wasteful number, since it uses less digits than its factorization.

6857400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069 (or 1060 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 6857400 is about 2618.6637813969. The cubic root of 6857400 is about 189.9852250745.

The spelling of 6857400 in words is "six million, eight hundred fifty-seven thousand, four hundred".