720567740 has 24 divisors (see below), whose sum is σ = 1515866352. Its totient is φ = 287717760.

The previous prime is 720567739. The next prime is 720567773. The reversal of 720567740 is 47765027.

It is a junction number, because it is equal to n+sod(n) for n = 720567694 and 720567703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20129 + ... + 42968.

It is an arithmetic number, because the mean of its divisors is an integer number (63161098).

Almost surely, 2^720567740 is an apocalyptic number.

It is an amenable number.

720567740 is an abundant number, since it is smaller than the sum of its proper divisors (795298612).

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

720567740 is a wasteful number, since it uses less digits than its factorization.

720567740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63677 (or 63675 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 720567740 is about 26843.3928555986. The cubic root of 720567740 is about 896.5164682263.

The spelling of 720567740 in words is "seven hundred twenty million, five hundred sixty-seven thousand, seven hundred forty".