675623555 has 4 divisors (see below), whose sum is σ = 810748272. Its totient is φ = 540498840.

The previous prime is 675623549. The next prime is 675623581. The reversal of 675623555 is 555326576.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 675623555 - 2¹² = 675619459 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 67562351 + ... + 67562360.

It is an arithmetic number, because the mean of its divisors is an integer number (202687068).

Almost surely, 2^675623555 is an apocalyptic number.

675623555 is a deficient number, since it is larger than the sum of its proper divisors (135124717).

675623555 is a wasteful number, since it uses less digits than its factorization.

675623555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135124716.

The product of its digits is 945000, while the sum is 44.

The square root of 675623555 is about 25992.7596649529. The cubic root of 675623555 is about 877.4753547568.

It can be divided in two parts, 67562 and 3555, that added together give a palindrome (71117).

The spelling of 675623555 in words is "six hundred seventy-five million, six hundred twenty-three thousand, five hundred fifty-five".