1616223 has 8 divisors (see below), whose sum is σ = 2462848. Its totient is φ = 923544.

The previous prime is 1616221. The next prime is 1616227. The reversal of 1616223 is 3226161.

It is a happy number.

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

It is not a de Polignac number, because 1616223 - 2¹ = 1616221 is a prime.

It is a super-2 number, since 2×1616223² = 5224353571458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 76963 = 1616223 / (1 + 6 + 1 + 6 + 2 + 2 + 3).

It is a Duffinian number.

1616223 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1616223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616221) 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, 38461 + ... + 38502.

It is an arithmetic number, because the mean of its divisors is an integer number (307856).

2^1616223 is an apocalyptic number.

1616223 is a deficient number, since it is larger than the sum of its proper divisors (846625).

1616223 is an equidigital number, since it uses as much as digits as its factorization.

1616223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76973.

The product of its digits is 432, while the sum is 21.

The square root of 1616223 is about 1271.3075945655. The cubic root of 1616223 is about 117.3546837941.

The spelling of 1616223 in words is "one million, six hundred sixteen thousand, two hundred twenty-three".