620873909378026 has 32 divisors (see below), whose sum is σ = 933473481232320. Its totient is φ = 309716943148800.

The previous prime is 620873909377973. The next prime is 620873909378027.

620873909378026 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×620873909378026² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (70) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (620873909378027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8624770005 + ... + 8624841991.

It is an arithmetic number, because the mean of its divisors is an integer number (29171046288510).

Almost surely, 2^{620873909378026} is an apocalyptic number.

620873909378026 is the 15759111-st centered pentagonal number.

620873909378026 is a deficient number, since it is larger than the sum of its proper divisors (312599571854294).

620873909378026 is a wasteful number, since it uses less digits than its factorization.

620873909378026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77830.

The product of its (nonzero) digits is 329204736, while the sum is 70.

The spelling of 620873909378026 in words is "six hundred twenty trillion, eight hundred seventy-three billion, nine hundred nine million, three hundred seventy-eight thousand, twenty-six".