620453244 has 24 divisors (see below), whose sum is σ = 1510669440. Its totient is φ = 197825584.

The previous prime is 620453243. The next prime is 620453257. The reversal of 620453244 is 442354026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620453243) 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, 1123734 + ... + 1124285.

It is an arithmetic number, because the mean of its divisors is an integer number (62944560).

Almost surely, 2^620453244 is an apocalyptic number.

It is an amenable number.

620453244 is an abundant number, since it is smaller than the sum of its proper divisors (890216196).

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

620453244 is a wasteful number, since it uses less digits than its factorization.

620453244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248049 (or 2248047 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 620453244 is about 24908.8988917616. The cubic root of 620453244 is about 852.9096337473.

The spelling of 620453244 in words is "six hundred twenty million, four hundred fifty-three thousand, two hundred forty-four".