6685057015 has 48 divisors (see below), whose sum is σ = 10089963072. Its totient is φ = 4214439936.

The previous prime is 6685057013. The next prime is 6685057021. The reversal of 6685057015 is 5107505866.

It is not a de Polignac number, because 6685057015 - 2¹ = 6685057013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685057013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 814462 + ... + 822628.

It is an arithmetic number, because the mean of its divisors is an integer number (210207564).

Almost surely, 2^6685057015 is an apocalyptic number.

6685057015 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6685057015 is a deficient number, since it is larger than the sum of its proper divisors (3404906057).

6685057015 is a wasteful number, since it uses less digits than its factorization.

6685057015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8456 (or 8449 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The square root of 6685057015 is about 81762.1979584698. The cubic root of 6685057015 is about 1883.8010669178.

The spelling of 6685057015 in words is "six billion, six hundred eighty-five million, fifty-seven thousand, fifteen".