6813750 has 80 divisors (see below), whose sum is σ = 17994240. Its totient is φ = 1716000.

The previous prime is 6813739. The next prime is 6813797. The reversal of 6813750 is 573186.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 86211 + ... + 86289.

It is an arithmetic number, because the mean of its divisors is an integer number (224928).

Almost surely, 2^6813750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6813750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8997120).

6813750 is an abundant number, since it is smaller than the sum of its proper divisors (11180490).

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

6813750 is a wasteful number, since it uses less digits than its factorization.

6813750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 6813750 is about 2610.3160728157. The cubic root of 6813750 is about 189.5812569376.

The spelling of 6813750 in words is "six million, eight hundred thirteen thousand, seven hundred fifty".