720902 has 32 divisors (see below), whose sum is σ = 1415232. Its totient is φ = 267264.

The previous prime is 720901. The next prime is 720913. The reversal of 720902 is 209027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2978 + ... + 3210.

It is an arithmetic number, because the mean of its divisors is an integer number (44226).

2⁷²⁰⁹⁰² is an apocalyptic number.

720902 is a deficient number, since it is larger than the sum of its proper divisors (694330).

720902 is a wasteful number, since it uses less digits than its factorization.

720902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 720902 is about 849.0594796597. The cubic root of 720902 is about 89.6655073409.

Adding to 720902 its reverse (209027), we get a palindrome (929929).

The spelling of 720902 in words is "seven hundred twenty thousand, nine hundred two".