620323444 has 48 divisors (see below), whose sum is σ = 1187136720. Its totient is φ = 281917440.

The previous prime is 620323441. The next prime is 620323447. The reversal of 620323444 is 444323026.

620323444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (620323441) and next prime (620323447).

It can be written as a sum of positive squares in 8 ways, for example, as 74166544 + 546156900 = 8612^2 + 23370^2 .

It is a super-2 number, since 2×620323444² = 769602350352042272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620323441) 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, 1345374 + ... + 1345834.

It is an arithmetic number, because the mean of its divisors is an integer number (24732015).

Almost surely, 2^620323444 is an apocalyptic number.

It is an amenable number.

620323444 is a deficient number, since it is larger than the sum of its proper divisors (566813276).

620323444 is a wasteful number, since it uses less digits than its factorization.

620323444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 620323444 is about 24906.2932609411. The cubic root of 620323444 is about 852.8501528262.

The spelling of 620323444 in words is "six hundred twenty million, three hundred twenty-three thousand, four hundred forty-four".