620866498064 has 40 divisors (see below), whose sum is σ = 1255297989120. Its totient is φ = 296920090368.

The previous prime is 620866498003. The next prime is 620866498069. The reversal of 620866498064 is 460894668026.

It is a junction number, because it is equal to n+sod(n) for n = 620866497994 and 620866498012.

It is not an unprimeable number, because it can be changed into a prime (620866498069) 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, 9446564 + ... + 9512060.

It is an arithmetic number, because the mean of its divisors is an integer number (31382449728).

Almost surely, 2^620866498064 is an apocalyptic number.

It is an amenable number.

620866498064 is an abundant number, since it is smaller than the sum of its proper divisors (634431491056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620866498064 is a wasteful number, since it uses less digits than its factorization.

620866498064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91287 (or 91281 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 59.

The spelling of 620866498064 in words is "six hundred twenty billion, eight hundred sixty-six million, four hundred ninety-eight thousand, sixty-four".