672729 has 8 divisors (see below), whose sum is σ = 914112. Its totient is φ = 439920.

The previous prime is 672703. The next prime is 672743. The reversal of 672729 is 927276.

672729 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 not a de Polignac number, because 672729 - 2⁸ = 672473 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 7² + 7³ + 2¹¹ + 2¹⁷ + 9⁶ .

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 672729.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672779) 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, 1957 + ... + 2274.

It is an arithmetic number, because the mean of its divisors is an integer number (114264).

2⁶⁷²⁷²⁹ is an apocalyptic number.

It is an amenable number.

672729 is a deficient number, since it is larger than the sum of its proper divisors (241383).

672729 is a wasteful number, since it uses less digits than its factorization.

672729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4287.

The product of its digits is 10584, while the sum is 33.

The square root of 672729 is about 820.2005852229. The cubic root of 672729 is about 87.6220446594.

The spelling of 672729 in words is "six hundred seventy-two thousand, seven hundred twenty-nine".