900623 has 2 divisors, whose sum is σ = 900624. Its totient is φ = 900622.

The previous prime is 900607. The next prime is 900649. The reversal of 900623 is 326009.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 900623 - 2⁴ = 900607 is a prime.

It is a super-2 number, since 2×900623² = 1622243576258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 900595 and 900604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450311 + 450312.

It is an arithmetic number, because the mean of its divisors is an integer number (450312).

2⁹⁰⁰⁶²³ is an apocalyptic number.

900623 is a deficient number, since it is larger than the sum of its proper divisors (1).

900623 is an equidigital number, since it uses as much as digits as its factorization.

900623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 900623 is about 949.0115910778. The cubic root of 900623 is about 96.5712110957.

The spelling of 900623 in words is "nine hundred thousand, six hundred twenty-three".