720514 has 4 divisors (see below), whose sum is σ = 1080774. Its totient is φ = 360256.

The previous prime is 720497. The next prime is 720527. The reversal of 720514 is 415027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 415027 = 173 ⋅2399.

It can be written as a sum of positive squares in only one way, i.e., 444889 + 275625 = 667^2 + 525^2 .

It is a junction number, because it is equal to n+sod(n) for n = 720491 and 720500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180127 + ... + 180130.

2⁷²⁰⁵¹⁴ is an apocalyptic number.

720514 is a deficient number, since it is larger than the sum of its proper divisors (360260).

720514 is a wasteful number, since it uses less digits than its factorization.

720514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360259.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 720514 is about 848.8309607925. The cubic root of 720514 is about 89.6494180249.

The spelling of 720514 in words is "seven hundred twenty thousand, five hundred fourteen".