720422620 has 48 divisors (see below), whose sum is σ = 1594857600. Its totient is φ = 272600640.

The previous prime is 720422581. The next prime is 720422621. The reversal of 720422620 is 26224027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720422621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444171 + ... + 445789.

It is an arithmetic number, because the mean of its divisors is an integer number (33226200).

Almost surely, 2^720422620 is an apocalyptic number.

It is an amenable number.

720422620 is an abundant number, since it is smaller than the sum of its proper divisors (874434980).

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

720422620 is a wasteful number, since it uses less digits than its factorization.

720422620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818 (or 2816 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 720422620 is about 26840.6896334651. The cubic root of 720422620 is about 896.4562790182.

Adding to 720422620 its reverse (26224027), we get a palindrome (746646647).

The spelling of 720422620 in words is "seven hundred twenty million, four hundred twenty-two thousand, six hundred twenty".