406693 has 4 divisors (see below), whose sum is σ = 464800. Its totient is φ = 348588.

The previous prime is 406673. The next prime is 406697. The reversal of 406693 is 396604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406693 - 2⁵ = 406661 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406697) 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, 29043 + ... + 29056.

It is an arithmetic number, because the mean of its divisors is an integer number (116200).

2⁴⁰⁶⁶⁹³ is an apocalyptic number.

It is an amenable number.

406693 is a deficient number, since it is larger than the sum of its proper divisors (58107).

406693 is an equidigital number, since it uses as much as digits as its factorization.

406693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58106.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 406693 is about 637.7248623035. The cubic root of 406693 is about 74.0893126643.

The spelling of 406693 in words is "four hundred six thousand, six hundred ninety-three".