620644680102 has 16 divisors (see below), whose sum is σ = 1241747940672. Its totient is φ = 206805129960.

The previous prime is 620644680041. The next prime is 620644680109. The reversal of 620644680102 is 201086446026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620644680109) 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, 19089924 + ... + 19122407.

It is an arithmetic number, because the mean of its divisors is an integer number (77609246292).

Almost surely, 2^620644680102 is an apocalyptic number.

620644680102 is an abundant number, since it is smaller than the sum of its proper divisors (621103260570).

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

620644680102 is a wasteful number, since it uses less digits than its factorization.

620644680102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38215043.

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 620644680102 in words is "six hundred twenty billion, six hundred forty-four million, six hundred eighty thousand, one hundred two".