623125639 has 8 divisors (see below), whose sum is σ = 645185520. Its totient is φ = 601104000.

The previous prime is 623125631. The next prime is 623125651. The reversal of 623125639 is 936521326.

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

It is a cyclic number.

It is not a de Polignac number, because 623125639 - 2³ = 623125631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 623125598 and 623125607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623125631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25884 + ... + 43774.

It is an arithmetic number, because the mean of its divisors is an integer number (80648190).

Almost surely, 2^623125639 is an apocalyptic number.

623125639 is a deficient number, since it is larger than the sum of its proper divisors (22059881).

623125639 is a wasteful number, since it uses less digits than its factorization.

623125639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19121.

The product of its digits is 58320, while the sum is 37.

The square root of 623125639 is about 24962.4846319432. The cubic root of 623125639 is about 854.1324209132.

The spelling of 623125639 in words is "six hundred twenty-three million, one hundred twenty-five thousand, six hundred thirty-nine".