620393 has 2 divisors, whose sum is σ = 620394. Its totient is φ = 620392.

The previous prime is 620383. The next prime is 620401. The reversal of 620393 is 393026.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 619369 + 1024 = 787^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 620393 - 2⁴ = 620377 is a prime.

It is not a weakly prime, because it can be changed into another prime (620303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310196 + 310197.

It is an arithmetic number, because the mean of its divisors is an integer number (310197).

2⁶²⁰³⁹³ is an apocalyptic number.

It is an amenable number.

620393 is a deficient number, since it is larger than the sum of its proper divisors (1).

620393 is an equidigital number, since it uses as much as digits as its factorization.

620393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 620393 is about 787.6503031168. The cubic root of 620393 is about 85.2882027933.

The spelling of 620393 in words is "six hundred twenty thousand, three hundred ninety-three".