1617489 has 20 divisors (see below), whose sum is σ = 2545840. Its totient is φ = 1020600.

The previous prime is 1617463. The next prime is 1617493. The reversal of 1617489 is 9847161.

It is not a de Polignac number, because 1617489 - 2¹² = 1613393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1617439) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1014 + ... + 2064.

It is an arithmetic number, because the mean of its divisors is an integer number (127292).

2^1617489 is an apocalyptic number.

1617489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1617489 is a deficient number, since it is larger than the sum of its proper divisors (928351).

1617489 is a wasteful number, since it uses less digits than its factorization.

1617489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1073 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1617489 is about 1271.8054096441. The cubic root of 1617489 is about 117.3853174080.

The spelling of 1617489 in words is "one million, six hundred seventeen thousand, four hundred eighty-nine".