620756260617 has 4 divisors (see below), whose sum is σ = 827675014160. Its totient is φ = 413837507076.

The previous prime is 620756260561. The next prime is 620756260673. The reversal of 620756260617 is 716062657026.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (620756260561) and next prime (620756260673).

It is not a de Polignac number, because 620756260617 - 2¹¹ = 620756258569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620756260217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103459376767 + ... + 103459376772.

It is an arithmetic number, because the mean of its divisors is an integer number (206918753540).

Almost surely, 2^620756260617 is an apocalyptic number.

It is an amenable number.

620756260617 is a deficient number, since it is larger than the sum of its proper divisors (206918753543).

620756260617 is a wasteful number, since it uses less digits than its factorization.

620756260617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206918753542.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 620756260617 in words is "six hundred twenty billion, seven hundred fifty-six million, two hundred sixty thousand, six hundred seventeen".