723667 has 8 divisors (see below), whose sum is σ = 839936. Its totient is φ = 610632.

The previous prime is 723661. The next prime is 723721. The reversal of 723667 is 766327.

723667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 723667 - 2¹¹ = 721619 is a prime.

It is a Duffinian number.

723667 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (723661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (104992).

2⁷²³⁶⁶⁷ is an apocalyptic number.

723667 is a deficient number, since it is larger than the sum of its proper divisors (116269).

723667 is a wasteful number, since it uses less digits than its factorization.

723667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617.

The product of its digits is 10584, while the sum is 31.

The square root of 723667 is about 850.6861936108. The cubic root of 723667 is about 89.7799976283.

The spelling of 723667 in words is "seven hundred twenty-three thousand, six hundred sixty-seven".