620249 has 4 divisors (see below), whose sum is σ = 708864. Its totient is φ = 531636.

The previous prime is 620239. The next prime is 620251. The reversal of 620249 is 942026.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 620249 - 2⁴ = 620233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44297 + ... + 44310.

It is an arithmetic number, because the mean of its divisors is an integer number (177216).

2⁶²⁰²⁴⁹ is an apocalyptic number.

It is an amenable number.

620249 is a deficient number, since it is larger than the sum of its proper divisors (88615).

620249 is an equidigital number, since it uses as much as digits as its factorization.

620249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88614.

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

The square root of 620249 is about 787.5588866872. The cubic root of 620249 is about 85.2816035078.

The spelling of 620249 in words is "six hundred twenty thousand, two hundred forty-nine".