620063665621 has 8 divisors (see below), whose sum is σ = 634504323200. Its totient is φ = 605623943232.

The previous prime is 620063665597. The next prime is 620063665657. The reversal of 620063665621 is 126566360026.

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 620063665621 - 2⁵ = 620063665589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620063668621) 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, 1210381 + ... + 1644733.

It is an arithmetic number, because the mean of its divisors is an integer number (79313040400).

Almost surely, 2^620063665621 is an apocalyptic number.

It is an amenable number.

620063665621 is a deficient number, since it is larger than the sum of its proper divisors (14440657579).

620063665621 is a wasteful number, since it uses less digits than its factorization.

620063665621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467595.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 620063665621 in words is "six hundred twenty billion, sixty-three million, six hundred sixty-five thousand, six hundred twenty-one".