620743 has 2 divisors, whose sum is σ = 620744. Its totient is φ = 620742.

The previous prime is 620731. The next prime is 620759. The reversal of 620743 is 347026.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310371 + 310372.

It is an arithmetic number, because the mean of its divisors is an integer number (310372).

2⁶²⁰⁷⁴³ is an apocalyptic number.

620743 is a deficient number, since it is larger than the sum of its proper divisors (1).

620743 is an equidigital number, since it uses as much as digits as its factorization.

620743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 620743 is about 787.8724516062. The cubic root of 620743 is about 85.3042384670.

Adding to 620743 its reverse (347026), we get a palindrome (967769).

The spelling of 620743 in words is "six hundred twenty thousand, seven hundred forty-three".