620839089 has 12 divisors (see below), whose sum is σ = 965749876. Its totient is φ = 382054752.

The previous prime is 620839061. The next prime is 620839129. The reversal of 620839089 is 980938026.

It can be written as a sum of positive squares in 2 ways, for example, as 38340864 + 582498225 = 6192^2 + 24135^2 .

It is not a de Polignac number, because 620839089 - 2⁷ = 620838961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620839019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2653042 + ... + 2653275.

Almost surely, 2^620839089 is an apocalyptic number.

It is an amenable number.

620839089 is a deficient number, since it is larger than the sum of its proper divisors (344910787).

620839089 is a wasteful number, since it uses less digits than its factorization.

620839089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306336 (or 5306333 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 620839089 is about 24916.6428115828. The cubic root of 620839089 is about 853.0863984627.

The spelling of 620839089 in words is "six hundred twenty million, eight hundred thirty-nine thousand, eighty-nine".