720939600 has 180 divisors, whose sum is σ = 2610937056. Its totient is φ = 183870720.

The previous prime is 720939589. The next prime is 720939601. The reversal of 720939600 is 6939027.

It is a tau number, because it is divible by the number of its divisors (180).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720939601) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 78447 + ... + 87153.

Almost surely, 2^720939600 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 720939600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305468528).

720939600 is an abundant number, since it is smaller than the sum of its proper divisors (1889997456).

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

720939600 is a wasteful number, since it uses less digits than its factorization.

720939600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8754 (or 8740 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 720939600 is about 26850.3184338659. The cubic root of 720939600 is about 896.6706620485.

The spelling of 720939600 in words is "seven hundred twenty million, nine hundred thirty-nine thousand, six hundred".