6940900857 has 48 divisors (see below), whose sum is σ = 10557195264. Its totient is φ = 4050261600.

The previous prime is 6940900843. The next prime is 6940900867. The reversal of 6940900857 is 7580090496.

It is not a de Polignac number, because 6940900857 - 2⁶ = 6940900793 is a prime.

It is a super-2 number, since 2×6940900857² = 96352209413406668898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6940900807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1105108 + ... + 1111370.

It is an arithmetic number, because the mean of its divisors is an integer number (219941568).

Almost surely, 2^6940900857 is an apocalyptic number.

It is an amenable number.

6940900857 is a deficient number, since it is larger than the sum of its proper divisors (3616294407).

6940900857 is a wasteful number, since it uses less digits than its factorization.

6940900857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402 (or 6391 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 6940900857 is about 83312.0690956598. The cubic root of 6940900857 is about 1907.5325041083.

The spelling of 6940900857 in words is "six billion, nine hundred forty million, nine hundred thousand, eight hundred fifty-seven".