623575 has 6 divisors (see below), whose sum is σ = 773264. Its totient is φ = 498840.

The previous prime is 623563. The next prime is 623591. The reversal of 623575 is 575326.

It is not a de Polignac number, because 623575 - 2¹¹ = 621527 is a prime.

It is a Duffinian number.

623575 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 12447 + ... + 12496.

2⁶²³⁵⁷⁵ is an apocalyptic number.

623575 is a deficient number, since it is larger than the sum of its proper divisors (149689).

623575 is a wasteful number, since it uses less digits than its factorization.

623575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24953 (or 24948 counting only the distinct ones).

The product of its digits is 6300, while the sum is 28.

The square root of 623575 is about 789.6676516105. The cubic root of 623575 is about 85.4337688011.

The spelling of 623575 in words is "six hundred twenty-three thousand, five hundred seventy-five".