340623 has 6 divisors (see below), whose sum is σ = 492024. Its totient is φ = 227076.

The previous prime is 340619. The next prime is 340633. The reversal of 340623 is 326043.

340623 is a `hidden beast` number, since 3 + 40 + 623 = 666.

It is not a de Polignac number, because 340623 - 2² = 340619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340596 and 340605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18915 + ... + 18932.

It is an arithmetic number, because the mean of its divisors is an integer number (82004).

2³⁴⁰⁶²³ is an apocalyptic number.

340623 is a deficient number, since it is larger than the sum of its proper divisors (151401).

340623 is a wasteful number, since it uses less digits than its factorization.

340623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37853 (or 37850 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 340623 is about 583.6291630822. The cubic root of 340623 is about 69.8379243448.

Adding to 340623 its reverse (326043), we get a palindrome (666666).

The spelling of 340623 in words is "three hundred forty thousand, six hundred twenty-three".