623976109 has 8 divisors (see below), whose sum is σ = 661704120. Its totient is φ = 586361856.

The previous prime is 623976107. The next prime is 623976113. The reversal of 623976109 is 901679326.

623976109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 151044100 + 472932009 = 12290^2 + 21747^2 .

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 623976109 - 2¹ = 623976107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623976107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17004 + ... + 39205.

It is an arithmetic number, because the mean of its divisors is an integer number (82713015).

Almost surely, 2^623976109 is an apocalyptic number.

It is an amenable number.

623976109 is a deficient number, since it is larger than the sum of its proper divisors (37728011).

623976109 is a wasteful number, since it uses less digits than its factorization.

623976109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56879.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 623976109 is about 24979.5137863010. The cubic root of 623976109 is about 854.5208304217.

The spelling of 623976109 in words is "six hundred twenty-three million, nine hundred seventy-six thousand, one hundred nine".