620065506621 has 16 divisors (see below), whose sum is σ = 901936240128. Its totient is φ = 375787786800.

The previous prime is 620065506607. The next prime is 620065506631. The reversal of 620065506621 is 126605560026.

It is a happy number.

It is not a de Polignac number, because 620065506621 - 2⁵ = 620065506589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 620065506621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620065506601) 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 15 ways as a sum of consecutive naturals, for example, 1223586 + ... + 1654476.

It is an arithmetic number, because the mean of its divisors is an integer number (56371015008).

Almost surely, 2^620065506621 is an apocalyptic number.

It is an amenable number.

620065506621 is a deficient number, since it is larger than the sum of its proper divisors (281870733507).

620065506621 is a wasteful number, since it uses less digits than its factorization.

620065506621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474512.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 620065506621 in words is "six hundred twenty billion, sixty-five million, five hundred six thousand, six hundred twenty-one".