396687 has 4 divisors (see below), whose sum is σ = 528920. Its totient is φ = 264456.

The previous prime is 396679. The next prime is 396703. The reversal of 396687 is 786693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786693 = 3 ⋅262231.

It is not a de Polignac number, because 396687 - 2³ = 396679 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396637) 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, 66112 + ... + 66117.

It is an arithmetic number, because the mean of its divisors is an integer number (132230).

2³⁹⁶⁶⁸⁷ is an apocalyptic number.

396687 is a deficient number, since it is larger than the sum of its proper divisors (132233).

396687 is a wasteful number, since it uses less digits than its factorization.

396687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132232.

The product of its digits is 54432, while the sum is 39.

The square root of 396687 is about 629.8309296946. The cubic root of 396687 is about 73.4766458265.

The spelling of 396687 in words is "three hundred ninety-six thousand, six hundred eighty-seven".