407691 has 12 divisors (see below), whose sum is σ = 596232. Its totient is φ = 268416.

The previous prime is 407669. The next prime is 407699. The reversal of 407691 is 196704.

It is not a de Polignac number, because 407691 - 2⁹ = 407179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (407699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 640 + ... + 1106.

It is an arithmetic number, because the mean of its divisors is an integer number (49686).

2⁴⁰⁷⁶⁹¹ is an apocalyptic number.

407691 is a deficient number, since it is larger than the sum of its proper divisors (188541).

407691 is a wasteful number, since it uses less digits than its factorization.

407691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 407691 is about 638.5068519601. The cubic root of 407691 is about 74.1498667218.

The spelling of 407691 in words is "four hundred seven thousand, six hundred ninety-one".