720398 has 12 divisors (see below), whose sum is σ = 1257192. Its totient is φ = 308700.

The previous prime is 720397. The next prime is 720403. The reversal of 720398 is 893027.

It is a self number, because there is not a number n which added to its sum of digits gives 720398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3578 + ... + 3773.

It is an arithmetic number, because the mean of its divisors is an integer number (104766).

2⁷²⁰³⁹⁸ is an apocalyptic number.

720398 is a deficient number, since it is larger than the sum of its proper divisors (536794).

720398 is a wasteful number, since it uses less digits than its factorization.

720398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367 (or 7360 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 720398 is about 848.7626287720. The cubic root of 720398 is about 89.6446066955.

The spelling of 720398 in words is "seven hundred twenty thousand, three hundred ninety-eight".