685500351 has 4 divisors (see below), whose sum is σ = 914000472. Its totient is φ = 457000232.

The previous prime is 685500313. The next prime is 685500379. The reversal of 685500351 is 153005586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 685500351 - 2⁹ = 685499839 is a prime.

It is a super-2 number, since 2×685500351² = 939821462442246402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685501351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114250056 + ... + 114250061.

It is an arithmetic number, because the mean of its divisors is an integer number (228500118).

Almost surely, 2^685500351 is an apocalyptic number.

685500351 is a deficient number, since it is larger than the sum of its proper divisors (228500121).

685500351 is a wasteful number, since it uses less digits than its factorization.

685500351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228500120.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 685500351 is about 26182.0616262356. The cubic root of 685500351 is about 881.7305610518.

The spelling of 685500351 in words is "six hundred eighty-five million, five hundred thousand, three hundred fifty-one".