620552903 has 16 divisors (see below), whose sum is σ = 659473920. Its totient is φ = 582720864.

The previous prime is 620552897. The next prime is 620552927. The reversal of 620552903 is 309255026.

It is a cyclic number.

It is not a de Polignac number, because 620552903 - 2⁶ = 620552839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620552903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620552963) 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 15 ways as a sum of consecutive naturals, for example, 329318 + ... + 331196.

It is an arithmetic number, because the mean of its divisors is an integer number (41217120).

Almost surely, 2^620552903 is an apocalyptic number.

620552903 is a deficient number, since it is larger than the sum of its proper divisors (38921017).

620552903 is a wasteful number, since it uses less digits than its factorization.

620552903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 620552903 is about 24910.8992812383. The cubic root of 620552903 is about 852.9552969091.

The spelling of 620552903 in words is "six hundred twenty million, five hundred fifty-two thousand, nine hundred three".