620789897 has 24 divisors (see below), whose sum is σ = 787046400. Its totient is φ = 479157120.

The previous prime is 620789893. The next prime is 620789927. The reversal of 620789897 is 798987026.

It is not a de Polignac number, because 620789897 - 2² = 620789893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620789893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42104 + ... + 54902.

It is an arithmetic number, because the mean of its divisors is an integer number (32793600).

Almost surely, 2^620789897 is an apocalyptic number.

It is an amenable number.

620789897 is a deficient number, since it is larger than the sum of its proper divisors (166256503).

620789897 is a wasteful number, since it uses less digits than its factorization.

620789897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12873 (or 12860 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 56.

The square root of 620789897 is about 24915.6556606484. The cubic root of 620789897 is about 853.0638665189.

The spelling of 620789897 in words is "six hundred twenty million, seven hundred eighty-nine thousand, eight hundred ninety-seven".