1623145 has 8 divisors (see below), whose sum is σ = 1989504. Its totient is φ = 1270704.

The previous prime is 1623137. The next prime is 1623157. The reversal of 1623145 is 5413261.

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

It is a cyclic number.

It is not a de Polignac number, because 1623145 - 2³ = 1623137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219 + ... + 3688.

It is an arithmetic number, because the mean of its divisors is an integer number (248688).

2^1623145 is an apocalyptic number.

It is an amenable number.

1623145 is a deficient number, since it is larger than the sum of its proper divisors (366359).

1623145 is an equidigital number, since it uses as much as digits as its factorization.

1623145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959.

The product of its digits is 720, while the sum is 22.

The square root of 1623145 is about 1274.0270797750. The cubic root of 1623145 is about 117.5219817030.

The spelling of 1623145 in words is "one million, six hundred twenty-three thousand, one hundred forty-five".