6857002961 has 2 divisors, whose sum is σ = 6857002962. Its totient is φ = 6857002960.

The previous prime is 6857002937. The next prime is 6857002963. The reversal of 6857002961 is 1692007586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3781635025 + 3075367936 = 61495^2 + 55456^2 .

It is a cyclic number.

It is not a de Polignac number, because 6857002961 - 2⁶ = 6857002897 is a prime.

Together with 6857002963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6857002963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428501480 + 3428501481.

It is an arithmetic number, because the mean of its divisors is an integer number (3428501481).

Almost surely, 2^6857002961 is an apocalyptic number.

It is an amenable number.

6857002961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6857002961 is an equidigital number, since it uses as much as digits as its factorization.

6857002961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 6857002961 is about 82807.0224135610. The cubic root of 6857002961 is about 1899.8155833012.

The spelling of 6857002961 in words is "six billion, eight hundred fifty-seven million, two thousand, nine hundred sixty-one".