620501269 has 2 divisors, whose sum is σ = 620501270. Its totient is φ = 620501268.

The previous prime is 620501267. The next prime is 620501279. The reversal of 620501269 is 962105026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314601169 + 305900100 = 17737^2 + 17490^2 .

It is a cyclic number.

It is not a de Polignac number, because 620501269 - 2¹ = 620501267 is a prime.

It is a super-2 number, since 2×620501269² = 770043649661220722, which contains 22 as substring.

Together with 620501267, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 620501269.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620501267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310250634 + 310250635.

It is an arithmetic number, because the mean of its divisors is an integer number (310250635).

Almost surely, 2^620501269 is an apocalyptic number.

It is an amenable number.

620501269 is a deficient number, since it is larger than the sum of its proper divisors (1).

620501269 is an equidigital number, since it uses as much as digits as its factorization.

620501269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 620501269 is about 24909.8628860136. The cubic root of 620501269 is about 852.9316391274.

It can be divided in two parts, 6205012 and 69, that added together give a square (6205081 = 2491²).

The spelling of 620501269 in words is "six hundred twenty million, five hundred one thousand, two hundred sixty-nine".