620168 has 8 divisors (see below), whose sum is σ = 1162830. Its totient is φ = 310080.

The previous prime is 620161. The next prime is 620171. The reversal of 620168 is 861026.

It can be written as a sum of positive squares in only one way, i.e., 605284 + 14884 = 778^2 + 122^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620161) by changing a digit.

620168 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38753 + ... + 38768.

2⁶²⁰¹⁶⁸ is an apocalyptic number.

It is an amenable number.

620168 is a deficient number, since it is larger than the sum of its proper divisors (542662).

620168 is a wasteful number, since it uses less digits than its factorization.

620168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77527 (or 77523 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 620168 is about 787.5074602821. The cubic root of 620168 is about 85.2778909609.

The spelling of 620168 in words is "six hundred twenty thousand, one hundred sixty-eight".