654920 has 32 divisors (see below), whose sum is σ = 1684800. Its totient is φ = 224448.

The previous prime is 654917. The next prime is 654923. The reversal of 654920 is 29456.

654920 = T₅₅ + T₅₆ + ... + T₁₅₉.

It is an interprime number because it is at equal distance from previous prime (654917) and next prime (654923).

It is a self number, because there is not a number n which added to its sum of digits gives 654920.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654920.

It is not an unprimeable number, because it can be changed into a prime (654923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890 + ... + 1449.

It is an arithmetic number, because the mean of its divisors is an integer number (52650).

2⁶⁵⁴⁹²⁰ is an apocalyptic number.

It is an amenable number.

654920 is an abundant number, since it is smaller than the sum of its proper divisors (1029880).

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

654920 is a wasteful number, since it uses less digits than its factorization.

654920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2353 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 654920 is about 809.2712771376. The cubic root of 654920 is about 86.8419201903.

The spelling of 654920 in words is "six hundred fifty-four thousand, nine hundred twenty".