2620720704 has 84 divisors (see below), whose sum is σ = 8066099184. Its totient is φ = 748774656.

The previous prime is 2620720703. The next prime is 2620720709. The reversal of 2620720704 is 4070270262.

It is a tau number, because it is divible by the number of its divisors (84).

It is not an unprimeable number, because it can be changed into a prime (2620720703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129874 + ... + 148689.

Almost surely, 2^2620720704 is an apocalyptic number.

2620720704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2620720704 is an abundant number, since it is smaller than the sum of its proper divisors (5445378480).

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

2620720704 is a wasteful number, since it uses less digits than its factorization.

2620720704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278592 (or 278575 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 2620720704 is about 51192.9751430799. The cubic root of 2620720704 is about 1378.7120771075.

Adding to 2620720704 its reverse (4070270262), we get a palindrome (6690990966).

The spelling of 2620720704 in words is "two billion, six hundred twenty million, seven hundred twenty thousand, seven hundred four".