6857780975 has 12 divisors (see below), whose sum is σ = 8506974120. Its totient is φ = 5484079200.

The previous prime is 6857780959. The next prime is 6857780983. The reversal of 6857780975 is 5790877586.

It is not a de Polignac number, because 6857780975 - 2⁴ = 6857780959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13196 + ... + 117854.

It is an arithmetic number, because the mean of its divisors is an integer number (708914510).

Almost surely, 2^6857780975 is an apocalyptic number.

6857780975 is a deficient number, since it is larger than the sum of its proper divisors (1649193145).

6857780975 is a wasteful number, since it uses less digits than its factorization.

6857780975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107290 (or 107285 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 62.

The square root of 6857780975 is about 82811.7200340628. The cubic root of 6857780975 is about 1899.8874333126.

The spelling of 6857780975 in words is "six billion, eight hundred fifty-seven million, seven hundred eighty thousand, nine hundred seventy-five".