720700 has 18 divisors (see below), whose sum is σ = 1564136. Its totient is φ = 288240.

The previous prime is 720697. The next prime is 720703. The reversal of 720700 is 7027.

It is an interprime number because it is at equal distance from previous prime (720697) and next prime (720703).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720703) 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, 3504 + ... + 3703.

2⁷²⁰⁷⁰⁰ is an apocalyptic number.

It is an amenable number.

720700 is an abundant number, since it is smaller than the sum of its proper divisors (843436).

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

720700 is a wasteful number, since it uses less digits than its factorization.

720700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221 (or 7214 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 16.

The square root of 720700 is about 848.9405161730. The cubic root of 720700 is about 89.6571316650.

Adding to 720700 its reverse (7027), we get a palindrome (727727).

The spelling of 720700 in words is "seven hundred twenty thousand, seven hundred", and thus it is an iban number.