6685771975 has 12 divisors (see below), whose sum is σ = 8395300960. Its totient is φ = 5280912000.

The previous prime is 6685771933. The next prime is 6685771979. The reversal of 6685771975 is 5791775866.

It is not a de Polignac number, because 6685771975 - 2⁷ = 6685771847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685771979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1690626 + ... + 1694575.

Almost surely, 2^6685771975 is an apocalyptic number.

6685771975 is a deficient number, since it is larger than the sum of its proper divisors (1709528985).

6685771975 is a wasteful number, since it uses less digits than its factorization.

6685771975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385290 (or 3385285 counting only the distinct ones).

The product of its digits is 22226400, while the sum is 61.

The square root of 6685771975 is about 81766.5700332355. The cubic root of 6685771975 is about 1883.8682213887.

The spelling of 6685771975 in words is "six billion, six hundred eighty-five million, seven hundred seventy-one thousand, nine hundred seventy-five".