720634608 has 60 divisors (see below), whose sum is σ = 2023469448. Its totient is φ = 239414400.

The previous prime is 720634589. The next prime is 720634619. The reversal of 720634608 is 806436027.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36058 + ... + 52358.

Almost surely, 2^720634608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720634608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1011734724).

720634608 is an abundant number, since it is smaller than the sum of its proper divisors (1302834840).

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

720634608 is a wasteful number, since it uses less digits than its factorization.

720634608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16622 (or 16613 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 720634608 is about 26844.6383473497. The cubic root of 720634608 is about 896.5441993266.

It can be divided in two parts, 7206 and 34608, that added together give a palindrome (41814).

The spelling of 720634608 in words is "seven hundred twenty million, six hundred thirty-four thousand, six hundred eight".