403667 has 4 divisors (see below), whose sum is σ = 440376. Its totient is φ = 366960.

The previous prime is 403661. The next prime is 403679. The reversal of 403667 is 766304.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 403667 - 2⁶ = 403603 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 403667.

It is not an unprimeable number, because it can be changed into a prime (403661) 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, 18338 + ... + 18359.

It is an arithmetic number, because the mean of its divisors is an integer number (110094).

2⁴⁰³⁶⁶⁷ is an apocalyptic number.

403667 is a deficient number, since it is larger than the sum of its proper divisors (36709).

403667 is a wasteful number, since it uses less digits than its factorization.

403667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36708.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 403667 is about 635.3479361736. The cubic root of 403667 is about 73.9051011425.

The spelling of 403667 in words is "four hundred three thousand, six hundred sixty-seven".