620746269596641 has 4 divisors (see below), whose sum is σ = 621314198481172. Its totient is φ = 620178340712112.

The previous prime is 620746269596611. The next prime is 620746269596647. The reversal of 620746269596641 is 146695962647026.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 379310486051025 + 241435783545616 = 19475895^2 + 15538204^2 .

It is a cyclic number.

It is not a de Polignac number, because 620746269596641 - 2¹¹ = 620746269594593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620746269596647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283964440626 + ... + 283964442811.

It is an arithmetic number, because the mean of its divisors is an integer number (155328549620293).

Almost surely, 2^{620746269596641} is an apocalyptic number.

It is an amenable number.

620746269596641 is a deficient number, since it is larger than the sum of its proper divisors (567928884531).

620746269596641 is a wasteful number, since it uses less digits than its factorization.

620746269596641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567928884530.

The product of its (nonzero) digits is 1410877440, while the sum is 73.

The spelling of 620746269596641 in words is "six hundred twenty trillion, seven hundred forty-six billion, two hundred sixty-nine million, five hundred ninety-six thousand, six hundred forty-one".