620543645001 has 128 divisors (see below), whose sum is σ = 1126562549760. Its totient is φ = 329533940736.

The previous prime is 620543644961. The next prime is 620543645011. The reversal of 620543645001 is 100546345026.

620543645001 is a `hidden beast` number, since 6 + 2 + 0 + 5 + 4 + 3 + 645 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 620543645001 - 2¹⁰ = 620543643977 is a prime.

It is a super-2 number, since 2×620543645001² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (620543645011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 82220110 + ... + 82227656.

It is an arithmetic number, because the mean of its divisors is an integer number (8801269920).

Almost surely, 2^620543645001 is an apocalyptic number.

It is an amenable number.

620543645001 is a deficient number, since it is larger than the sum of its proper divisors (506018904759).

620543645001 is a wasteful number, since it uses less digits than its factorization.

620543645001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7900 (or 7894 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 620543645001 in words is "six hundred twenty billion, five hundred forty-three million, six hundred forty-five thousand, one".