620429 has 2 divisors, whose sum is σ = 620430. Its totient is φ = 620428.

The previous prime is 620413. The next prime is 620437. The reversal of 620429 is 924026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487204 + 133225 = 698^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 620429 - 2⁴ = 620413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620429.

It is not a weakly prime, because it can be changed into another prime (620029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310214 + 310215.

It is an arithmetic number, because the mean of its divisors is an integer number (310215).

2⁶²⁰⁴²⁹ is an apocalyptic number.

It is an amenable number.

620429 is a deficient number, since it is larger than the sum of its proper divisors (1).

620429 is an equidigital number, since it uses as much as digits as its factorization.

620429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 620429 is about 787.6731555664. The cubic root of 620429 is about 85.2898524551.

The spelling of 620429 in words is "six hundred twenty thousand, four hundred twenty-nine".