620849 has 2 divisors, whose sum is σ = 620850. Its totient is φ = 620848.

The previous prime is 620831. The next prime is 620869. The reversal of 620849 is 948026.

620849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 616225 + 4624 = 785^2 + 68^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620849.

It is not a weakly prime, because it can be changed into another prime (620869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310424 + 310425.

It is an arithmetic number, because the mean of its divisors is an integer number (310425).

2⁶²⁰⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

620849 is a deficient number, since it is larger than the sum of its proper divisors (1).

620849 is an equidigital number, since it uses as much as digits as its factorization.

620849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 620849 is about 787.9397185064. The cubic root of 620849 is about 85.3090937961.

The spelling of 620849 in words is "six hundred twenty thousand, eight hundred forty-nine".