620835747841 has 8 divisors (see below), whose sum is σ = 657372247560. Its totient is φ = 584301109248.

The previous prime is 620835747767. The next prime is 620835747853. The reversal of 620835747841 is 148747538026.

It can be written as a sum of positive squares in 4 ways, for example, as 105232764816 + 515602983025 = 324396^2 + 718055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 620835747841 - 2⁷ = 620835747713 is a prime.

It is a super-2 number, since 2×620835747841² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620835747541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253225 + ... + 1142713.

It is an arithmetic number, because the mean of its divisors is an integer number (82171530945).

Almost surely, 2^620835747841 is an apocalyptic number.

It is an amenable number.

620835747841 is a deficient number, since it is larger than the sum of its proper divisors (36536499719).

620835747841 is a wasteful number, since it uses less digits than its factorization.

620835747841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930563.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 620835747841 in words is "six hundred twenty billion, eight hundred thirty-five million, seven hundred forty-seven thousand, eight hundred forty-one".