685832407 has 16 divisors (see below), whose sum is σ = 760981312. Its totient is φ = 613992960.

The previous prime is 685832359. The next prime is 685832419. The reversal of 685832407 is 704238586.

It is a cyclic number.

It is not a de Polignac number, because 685832407 - 2¹¹ = 685830359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (685832467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159982 + ... + 164212.

It is an arithmetic number, because the mean of its divisors is an integer number (47561332).

Almost surely, 2^685832407 is an apocalyptic number.

685832407 is a deficient number, since it is larger than the sum of its proper divisors (75148905).

685832407 is a wasteful number, since it uses less digits than its factorization.

685832407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 685832407 is about 26188.4021467519. The cubic root of 685832407 is about 881.8729080060.

The spelling of 685832407 in words is "six hundred eighty-five million, eight hundred thirty-two thousand, four hundred seven".