1655420 has 24 divisors (see below), whose sum is σ = 3744384. Its totient is φ = 611136.

The previous prime is 1655419. The next prime is 1655449. The reversal of 1655420 is 245561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2924 + ... + 3443.

It is an arithmetic number, because the mean of its divisors is an integer number (156016).

2^1655420 is an apocalyptic number.

1655420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1655420 is an abundant number, since it is smaller than the sum of its proper divisors (2088964).

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

1655420 is a wasteful number, since it uses less digits than its factorization.

1655420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6389 (or 6387 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1655420 is about 1286.6312603073. The cubic root of 1655420 is about 118.2958200648.

The spelling of 1655420 in words is "one million, six hundred fifty-five thousand, four hundred twenty".