6857499285 has 240 divisors, whose sum is σ = 16221744000. Its totient is φ = 2739453696.

The previous prime is 6857499283. The next prime is 6857499343. The reversal of 6857499285 is 5829947586.

6857499285 is a `hidden beast` number, since 68 + 5 + 7 + 499 + 2 + 85 = 666.

It is not a de Polignac number, because 6857499285 - 2¹ = 6857499283 is a prime.

It is a super-2 number, since 2×6857499285² = 94050592887551022450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6857499283) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 4901016 + ... + 4902414.

It is an arithmetic number, because the mean of its divisors is an integer number (67590600).

Almost surely, 2^6857499285 is an apocalyptic number.

6857499285 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6857499285 is an abundant number, since it is smaller than the sum of its proper divisors (9364244715).

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

6857499285 is a wasteful number, since it uses less digits than its factorization.

6857499285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1446 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 63.

The square root of 6857499285 is about 82810.0192307670. The cubic root of 6857499285 is about 1899.8614197172.

The spelling of 6857499285 in words is "six billion, eight hundred fifty-seven million, four hundred ninety-nine thousand, two hundred eighty-five".