1616489 has 8 divisors (see below), whose sum is σ = 1911360. Its totient is φ = 1337616.

The previous prime is 1616473. The next prime is 1616491. The reversal of 1616489 is 9846161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1616489 - 2⁴ = 1616473 is a prime.

It is a super-2 number, since 2×1616489² = 5226073374242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3779 + ... + 4184.

It is an arithmetic number, because the mean of its divisors is an integer number (238920).

2^1616489 is an apocalyptic number.

It is an amenable number.

1616489 is a deficient number, since it is larger than the sum of its proper divisors (294871).

1616489 is an equidigital number, since it uses as much as digits as its factorization.

1616489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7999.

The product of its digits is 10368, while the sum is 35.

The square root of 1616489 is about 1271.4122069573. The cubic root of 1616489 is about 117.3611215677.

The spelling of 1616489 in words is "one million, six hundred sixteen thousand, four hundred eighty-nine".