1655489 has 12 divisors (see below), whose sum is σ = 1922640. Its totient is φ = 1409760.

The previous prime is 1655483. The next prime is 1655497. The reversal of 1655489 is 9845561.

It is not a de Polignac number, because 1655489 - 2⁴ = 1655473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18557 + ... + 18645.

It is an arithmetic number, because the mean of its divisors is an integer number (160220).

2^1655489 is an apocalyptic number.

1655489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1655489 is a deficient number, since it is larger than the sum of its proper divisors (267151).

1655489 is an equidigital number, since it uses as much as digits as its factorization.

1655489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 119 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 1655489 is about 1286.6580742373. The cubic root of 1655489 is about 118.2974636151.

The spelling of 1655489 in words is "one million, six hundred fifty-five thousand, four hundred eighty-nine".