685068215 has 8 divisors (see below), whose sum is σ = 885319008. Its totient is φ = 505896480.

The previous prime is 685068211. The next prime is 685068229. The reversal of 685068215 is 512860586.

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

It is not a de Polignac number, because 685068215 - 2² = 685068211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685068211) 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, 5269691 + ... + 5269820.

It is an arithmetic number, because the mean of its divisors is an integer number (110664876).

Almost surely, 2^685068215 is an apocalyptic number.

685068215 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

685068215 is a deficient number, since it is larger than the sum of its proper divisors (200250793).

685068215 is a wasteful number, since it uses less digits than its factorization.

685068215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539529.

The product of its (nonzero) digits is 115200, while the sum is 41.

The square root of 685068215 is about 26173.8078047502. The cubic root of 685068215 is about 881.5452425900.

The spelling of 685068215 in words is "six hundred eighty-five million, sixty-eight thousand, two hundred fifteen".