720341626761 has 12 divisors (see below), whose sum is σ = 1040510222388. Its totient is φ = 480220015104.

The previous prime is 720341626687. The next prime is 720341626769. The reversal of 720341626761 is 167626143027.

720341626761 is a `hidden beast` number, since 7 + 203 + 416 + 26 + 7 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 204185593161 + 516156033600 = 451869^2 + 718440^2 .

It is not a de Polignac number, because 720341626761 - 2³⁵ = 685981888393 is a prime.

It is a super-2 number, since 2×720341626761² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (720341626769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23440 + ... + 1200513.

It is an arithmetic number, because the mean of its divisors is an integer number (86709185199).

Almost surely, 2^720341626761 is an apocalyptic number.

It is an amenable number.

720341626761 is a deficient number, since it is larger than the sum of its proper divisors (320168595627).

720341626761 is a wasteful number, since it uses less digits than its factorization.

720341626761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289352 (or 1289349 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

Adding to 720341626761 its reverse (167626143027), we get a palindrome (887967769788).

The spelling of 720341626761 in words is "seven hundred twenty billion, three hundred forty-one million, six hundred twenty-six thousand, seven hundred sixty-one".