6857457750 has 192 divisors, whose sum is σ = 21785295168. Its totient is φ = 1534464000.

The previous prime is 6857457749. The next prime is 6857457781. The reversal of 6857457750 is 577547586.

It is a happy number.

6857457750 is a `hidden beast` number, since 68 + 5 + 7 + 4 + 577 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 311094 + ... + 332406.

It is an arithmetic number, because the mean of its divisors is an integer number (113465079).

Almost surely, 2^6857457750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6857457750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10892647584).

6857457750 is an abundant number, since it is smaller than the sum of its proper divisors (14927837418).

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

6857457750 is a wasteful number, since it uses less digits than its factorization.

6857457750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21360 (or 21347 counting only the distinct ones).

The product of its (nonzero) digits is 8232000, while the sum is 54.

The square root of 6857457750 is about 82809.7684455161. The cubic root of 6857457750 is about 1899.8575839699.

The spelling of 6857457750 in words is "six billion, eight hundred fifty-seven million, four hundred fifty-seven thousand, seven hundred fifty".