1008623 has 8 divisors (see below), whose sum is σ = 1257600. Its totient is φ = 785880.

The previous prime is 1008617. The next prime is 1008659. The reversal of 1008623 is 3268001.

Added to its reverse (3268001) it gives a square (4276624 = 2068²).

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 1008623 - 2⁴ = 1008607 is a prime.

It is a super-2 number, since 2×1008623² = 2034640712258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1008595 and 1008604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008613) 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, 6473 + ... + 6626.

It is an arithmetic number, because the mean of its divisors is an integer number (157200).

2^1008623 is an apocalyptic number.

1008623 is a deficient number, since it is larger than the sum of its proper divisors (248977).

1008623 is a wasteful number, since it uses less digits than its factorization.

1008623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13117.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1008623 is about 1004.3022453425. The cubic root of 1008623 is about 100.2866110894.

Adding to 1008623 its reverse (3268001), we get a square (4276624 = 2068²).

The spelling of 1008623 in words is "one million, eight thousand, six hundred twenty-three".