6857900917 has 8 divisors (see below), whose sum is σ = 7844982656. Its totient is φ = 5872664592.

The previous prime is 6857900911. The next prime is 6857900939. The reversal of 6857900917 is 7190097586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6857900917 - 2²⁷ = 6723683189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6857900911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453378 + ... + 468259.

It is an arithmetic number, because the mean of its divisors is an integer number (980622832).

Almost surely, 2^6857900917 is an apocalyptic number.

It is an amenable number.

6857900917 is a deficient number, since it is larger than the sum of its proper divisors (987081739).

6857900917 is a wasteful number, since it uses less digits than its factorization.

6857900917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922707.

The product of its (nonzero) digits is 952560, while the sum is 52.

The square root of 6857900917 is about 82812.4442158303. Note that the first 3 decimals coincide. The cubic root of 6857900917 is about 1899.8985095373.

The spelling of 6857900917 in words is "six billion, eight hundred fifty-seven million, nine hundred thousand, nine hundred seventeen".