620404259 has 4 divisors (see below), whose sum is σ = 622399440. Its totient is φ = 618409080.

The previous prime is 620404237. The next prime is 620404261. The reversal of 620404259 is 952404026.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 620404259 - 2¹⁶ = 620338723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620404289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997124 + ... + 997745.

It is an arithmetic number, because the mean of its divisors is an integer number (155599860).

Almost surely, 2^620404259 is an apocalyptic number.

620404259 is a deficient number, since it is larger than the sum of its proper divisors (1995181).

620404259 is a wasteful number, since it uses less digits than its factorization.

620404259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995180.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 620404259 is about 24907.9155892258. The cubic root of 620404259 is about 852.8871873189.

The spelling of 620404259 in words is "six hundred twenty million, four hundred four thousand, two hundred fifty-nine".