620351 has 2 divisors, whose sum is σ = 620352. Its totient is φ = 620350.

The previous prime is 620329. The next prime is 620359. The reversal of 620351 is 153026.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620351 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310175 + 310176.

It is an arithmetic number, because the mean of its divisors is an integer number (310176).

2⁶²⁰³⁵¹ is an apocalyptic number.

620351 is a deficient number, since it is larger than the sum of its proper divisors (1).

620351 is an equidigital number, since it uses as much as digits as its factorization.

620351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 620351 is about 787.6236410875. The cubic root of 620351 is about 85.2862781072.

Adding to 620351 its reverse (153026), we get a palindrome (773377).

The spelling of 620351 in words is "six hundred twenty thousand, three hundred fifty-one".