720702 has 12 divisors (see below), whose sum is σ = 1561560. Its totient is φ = 240228.

The previous prime is 720697. The next prime is 720703. The reversal of 720702 is 207027.

It is a super-2 number, since 2×720702² = 1038822745608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 40039 = 720702 / (7 + 2 + 0 + 7 + 0 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720703) by changing a digit.

720702 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 5 ways as a sum of consecutive naturals, for example, 20002 + ... + 20037.

It is an arithmetic number, because the mean of its divisors is an integer number (130130).

2⁷²⁰⁷⁰² is an apocalyptic number.

720702 is an abundant number, since it is smaller than the sum of its proper divisors (840858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720702 is a wasteful number, since it uses less digits than its factorization.

720702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40047 (or 40044 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 720702 is about 848.9416941110. The cubic root of 720702 is about 89.6572146002.

Adding to 720702 its reverse (207027), we get a palindrome (927729).

The spelling of 720702 in words is "seven hundred twenty thousand, seven hundred two", and thus it is an iban number.