1683623 has 8 divisors (see below), whose sum is σ = 1783296. Its totient is φ = 1586200.

The previous prime is 1683601. The next prime is 1683631. The reversal of 1683623 is 3263861.

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 1683623 - 2¹⁶ = 1618087 is a prime.

It is a super-5 number, since 5×1683623⁵ (a number of 32 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a d-powerful number, because it can be written as 1 + 6⁴ + 8 + 3 + 6⁸ + 2⁹ + 3⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118 + ... + 2148.

It is an arithmetic number, because the mean of its divisors is an integer number (222912).

2^1683623 is an apocalyptic number.

1683623 is a deficient number, since it is larger than the sum of its proper divisors (99673).

1683623 is a wasteful number, since it uses less digits than its factorization.

1683623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125.

The product of its digits is 5184, while the sum is 29.

The square root of 1683623 is about 1297.5449895861. The cubic root of 1683623 is about 118.9638333706.

The spelling of 1683623 in words is "one million, six hundred eighty-three thousand, six hundred twenty-three".