623140555 has 8 divisors (see below), whose sum is σ = 747932544. Its totient is φ = 498403200.

The previous prime is 623140543. The next prime is 623140561. The reversal of 623140555 is 555041326.

623140555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 623140555 - 2²¹ = 621043403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18195 + ... + 39715.

It is an arithmetic number, because the mean of its divisors is an integer number (93491568).

Almost surely, 2^623140555 is an apocalyptic number.

623140555 is a deficient number, since it is larger than the sum of its proper divisors (124791989).

623140555 is a wasteful number, since it uses less digits than its factorization.

623140555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27317.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 623140555 is about 24962.7833984914. The cubic root of 623140555 is about 854.1392360918.

The spelling of 623140555 in words is "six hundred twenty-three million, one hundred forty thousand, five hundred fifty-five".