620445102 has 16 divisors (see below), whose sum is σ = 1294842240. Its totient is φ = 197823032.

The previous prime is 620445097. The next prime is 620445103. The reversal of 620445102 is 201544026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620445103) 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 7 ways as a sum of consecutive naturals, for example, 2247852 + ... + 2248127.

It is an arithmetic number, because the mean of its divisors is an integer number (80927640).

Almost surely, 2^620445102 is an apocalyptic number.

620445102 is an abundant number, since it is smaller than the sum of its proper divisors (674397138).

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

620445102 is a wasteful number, since it uses less digits than its factorization.

620445102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496007.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 620445102 is about 24908.7354556589. The cubic root of 620445102 is about 852.9059029152.

Adding to 620445102 its reverse (201544026), we get a palindrome (821989128).

The spelling of 620445102 in words is "six hundred twenty million, four hundred forty-five thousand, one hundred two".