685950199 has 8 divisors (see below), whose sum is σ = 750180240. Its totient is φ = 622032000.

The previous prime is 685950197. The next prime is 685950227. The reversal of 685950199 is 991059586.

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

It is a cyclic number.

It is not a de Polignac number, because 685950199 - 2¹ = 685950197 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 (685950197) 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, 73344 + ... + 82165.

It is an arithmetic number, because the mean of its divisors is an integer number (93772530).

Almost surely, 2^685950199 is an apocalyptic number.

685950199 is a deficient number, since it is larger than the sum of its proper divisors (64230041).

685950199 is a wasteful number, since it uses less digits than its factorization.

685950199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155921.

The product of its (nonzero) digits is 874800, while the sum is 52.

The square root of 685950199 is about 26190.6509846548. The cubic root of 685950199 is about 881.9233924616.

The spelling of 685950199 in words is "six hundred eighty-five million, nine hundred fifty thousand, one hundred ninety-nine".