623868143 has 4 divisors (see below), whose sum is σ = 624267840. Its totient is φ = 623468448.

The previous prime is 623868121. The next prime is 623868151. The reversal of 623868143 is 341868326.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 623868143 - 2¹⁰ = 623867119 is a prime.

It is a super-2 number, since 2×623868143² = 778422919700536898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623868143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623868103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197498 + ... + 200631.

It is an arithmetic number, because the mean of its divisors is an integer number (156066960).

Almost surely, 2^623868143 is an apocalyptic number.

623868143 is a deficient number, since it is larger than the sum of its proper divisors (399697).

623868143 is a wasteful number, since it uses less digits than its factorization.

623868143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399696.

The product of its digits is 165888, while the sum is 41.

The square root of 623868143 is about 24977.3526019072. The cubic root of 623868143 is about 854.4715419333.

The spelling of 623868143 in words is "six hundred twenty-three million, eight hundred sixty-eight thousand, one hundred forty-three".