620404253 has 4 divisors (see below), whose sum is σ = 709033440. Its totient is φ = 531775068.

The previous prime is 620404237. The next prime is 620404261. The reversal of 620404253 is 352404026.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 620404253 - 2⁴ = 620404237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620404753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44314583 + ... + 44314596.

It is an arithmetic number, because the mean of its divisors is an integer number (177258360).

Almost surely, 2^620404253 is an apocalyptic number.

It is an amenable number.

620404253 is a deficient number, since it is larger than the sum of its proper divisors (88629187).

620404253 is an equidigital number, since it uses as much as digits as its factorization.

620404253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88629186.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 620404253 is about 24907.9154687822. The cubic root of 620404253 is about 852.8871845695.

Adding to 620404253 its reverse (352404026), we get a palindrome (972808279).

The spelling of 620404253 in words is "six hundred twenty million, four hundred four thousand, two hundred fifty-three".