654620 has 24 divisors (see below), whose sum is σ = 1397088. Its totient is φ = 257600.

The previous prime is 654613. The next prime is 654623. The reversal of 654620 is 26456.

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 654620.

It is not an unprimeable number, because it can be changed into a prime (654623) by changing a digit.

654620 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 in 7 ways as a sum of consecutive naturals, for example, 1190 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (58212).

2⁶⁵⁴⁶²⁰ is an apocalyptic number.

It is an amenable number.

654620 is an abundant number, since it is smaller than the sum of its proper divisors (742468).

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

654620 is a wasteful number, since it uses less digits than its factorization.

654620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 654620 is about 809.0859039682. The cubic root of 654620 is about 86.8286582372.

The spelling of 654620 in words is "six hundred fifty-four thousand, six hundred twenty".