685750357 has 4 divisors (see below), whose sum is σ = 685804320. Its totient is φ = 685696396.

The previous prime is 685750321. The next prime is 685750361. The reversal of 685750357 is 753057586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 685750357 - 2¹¹ = 685748309 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 (685754357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3744 + ... + 37222.

It is an arithmetic number, because the mean of its divisors is an integer number (171451080).

Almost surely, 2^685750357 is an apocalyptic number.

It is an amenable number.

685750357 is a deficient number, since it is larger than the sum of its proper divisors (53963).

685750357 is a wasteful number, since it uses less digits than its factorization.

685750357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53962.

The product of its (nonzero) digits is 882000, while the sum is 46.

The square root of 685750357 is about 26186.8355667499. The cubic root of 685750357 is about 881.8377387930.

The spelling of 685750357 in words is "six hundred eighty-five million, seven hundred fifty thousand, three hundred fifty-seven".