623755476 has 18 divisors (see below), whose sum is σ = 1576715322. Its totient is φ = 207918480.

The previous prime is 623755421. The next prime is 623755499. The reversal of 623755476 is 674557326.

623755476 is a `hidden beast` number, since 6 + 23 + 7 + 554 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 560552976 + 63202500 = 23676^2 + 7950^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8663235 + ... + 8663306.

Almost surely, 2^623755476 is an apocalyptic number.

It is an amenable number.

623755476 is an abundant number, since it is smaller than the sum of its proper divisors (952959846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623755476 is a wasteful number, since it uses less digits than its factorization.

623755476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17326551 (or 17326546 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The square root of 623755476 is about 24975.0971169283. The cubic root of 623755476 is about 854.4201012872.

The spelling of 623755476 in words is "six hundred twenty-three million, seven hundred fifty-five thousand, four hundred seventy-six".