685740597 has 4 divisors (see below), whose sum is σ = 914320800. Its totient is φ = 457160396.

The previous prime is 685740581. The next prime is 685740599. The reversal of 685740597 is 795047586.

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.

It is a cyclic number.

It is not a de Polignac number, because 685740597 - 2⁴ = 685740581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685740599) 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, 114290097 + ... + 114290102.

It is an arithmetic number, because the mean of its divisors is an integer number (228580200).

Almost surely, 2^685740597 is an apocalyptic number.

It is an amenable number.

685740597 is a deficient number, since it is larger than the sum of its proper divisors (228580203).

685740597 is a wasteful number, since it uses less digits than its factorization.

685740597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228580202.

The product of its (nonzero) digits is 2116800, while the sum is 51.

The square root of 685740597 is about 26186.6492129100. The cubic root of 685740597 is about 881.8335551631.

The spelling of 685740597 in words is "six hundred eighty-five million, seven hundred forty thousand, five hundred ninety-seven".