720629 has 8 divisors (see below), whose sum is σ = 887040. Its totient is φ = 570096.

The previous prime is 720619. The next prime is 720653. The reversal of 720629 is 926027.

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 720629 - 2⁸ = 720373 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 720598 and 720607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720619) 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, 3869 + ... + 4050.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2⁷²⁰⁶²⁹ is an apocalyptic number.

It is an amenable number.

720629 is a deficient number, since it is larger than the sum of its proper divisors (166411).

720629 is a wasteful number, since it uses less digits than its factorization.

720629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 720629 is about 848.8986983145. The cubic root of 720629 is about 89.6541873676.

The spelling of 720629 in words is "seven hundred twenty thousand, six hundred twenty-nine".