396686693 has 16 divisors (see below), whose sum is σ = 450408000. Its totient is φ = 346343040.

The previous prime is 396686683. The next prime is 396686711.

396686693 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 396686693 - 2¹² = 396682597 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 (396686663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258338 + ... + 259868.

It is an arithmetic number, because the mean of its divisors is an integer number (28150500).

Almost surely, 2^396686693 is an apocalyptic number.

It is an amenable number.

396686693 is a deficient number, since it is larger than the sum of its proper divisors (53721307).

396686693 is a wasteful number, since it uses less digits than its factorization.

396686693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612.

The product of its digits is 7558272, while the sum is 56.

The square root of 396686693 is about 19916.9950795797. The cubic root of 396686693 is about 734.7662687170.

The spelling of 396686693 in words is "three hundred ninety-six million, six hundred eighty-six thousand, six hundred ninety-three".