720898 has 16 divisors (see below), whose sum is σ = 1160640. Its totient is φ = 334800.

The previous prime is 720887. The next prime is 720899. The reversal of 720898 is 898027.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720899) by changing a digit.

720898 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2163 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (72540).

2⁷²⁰⁸⁹⁸ is an apocalyptic number.

720898 is a deficient number, since it is larger than the sum of its proper divisors (439742).

720898 is a wasteful number, since it uses less digits than its factorization.

720898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 720898 is about 849.0571241089. The cubic root of 720898 is about 89.6653415011.

The spelling of 720898 in words is "seven hundred twenty thousand, eight hundred ninety-eight".