720061552 has 160 divisors (see below), whose sum is σ = 1755316224. Its totient is φ = 279417600.

The previous prime is 720061549. The next prime is 720061553. The reversal of 720061552 is 255160027.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 720061552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720061553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5669713 + ... + 5669839.

Almost surely, 2^720061552 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 720061552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877658112).

720061552 is an abundant number, since it is smaller than the sum of its proper divisors (1035254672).

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

720061552 is a wasteful number, since it uses less digits than its factorization.

720061552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 720061552 is about 26833.9626592868. The cubic root of 720061552 is about 896.3064892711.

The spelling of 720061552 in words is "seven hundred twenty million, sixty-one thousand, five hundred fifty-two".