620648 has 16 divisors (see below), whose sum is σ = 1330080. Its totient is φ = 265968.

The previous prime is 620647. The next prime is 620657. The reversal of 620648 is 846026.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620648.

It is not an unprimeable number, because it can be changed into a prime (620647) 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, 5486 + ... + 5597.

It is an arithmetic number, because the mean of its divisors is an integer number (83130).

2⁶²⁰⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

620648 is an abundant number, since it is smaller than the sum of its proper divisors (709432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620648 is a wasteful number, since it uses less digits than its factorization.

620648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11096 (or 11092 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 620648 is about 787.8121603530. The cubic root of 620648 is about 85.2998865232.

The spelling of 620648 in words is "six hundred twenty thousand, six hundred forty-eight".