623028555 has 24 divisors (see below), whose sum is σ = 1082388528. Its totient is φ = 331521216.

The previous prime is 623028541. The next prime is 623028559. The reversal of 623028555 is 555820326.

It is a happy number.

623028555 is a `hidden beast` number, since 623 + 0 + 28 + 5 + 5 + 5 = 666.

It is not a de Polignac number, because 623028555 - 2⁶ = 623028491 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (623028559) 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 in 23 ways as a sum of consecutive naturals, for example, 4309 + ... + 35561.

It is an arithmetic number, because the mean of its divisors is an integer number (45099522).

Almost surely, 2^623028555 is an apocalyptic number.

623028555 is a deficient number, since it is larger than the sum of its proper divisors (459359973).

623028555 is a wasteful number, since it uses less digits than its factorization.

623028555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31707 (or 31704 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 623028555 is about 24960.5399581019. The cubic root of 623028555 is about 854.0880601971.

The spelling of 623028555 in words is "six hundred twenty-three million, twenty-eight thousand, five hundred fifty-five".