1616873 has 4 divisors (see below), whose sum is σ = 1625988. Its totient is φ = 1607760.

The previous prime is 1616861. The next prime is 1616891. The reversal of 1616873 is 3786161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3786161 = 53 ⋅71437.

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 1459264 = 397^2 + 1208^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616873 - 2⁶ = 1616809 is a prime.

It is a super-2 number, since 2×1616873² = 5228556596258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286 + ... + 4647.

It is an arithmetic number, because the mean of its divisors is an integer number (406497).

2^1616873 is an apocalyptic number.

It is an amenable number.

1616873 is a deficient number, since it is larger than the sum of its proper divisors (9115).

1616873 is an equidigital number, since it uses as much as digits as its factorization.

1616873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9114.

The product of its digits is 6048, while the sum is 32.

The square root of 1616873 is about 1271.5632111696. The cubic root of 1616873 is about 117.3704139503.

The spelling of 1616873 in words is "one million, six hundred sixteen thousand, eight hundred seventy-three".