623820065 has 32 divisors (see below), whose sum is σ = 863533440. Its totient is φ = 427852800.

The previous prime is 623820019. The next prime is 623820079. The reversal of 623820065 is 560028326.

623820065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-623820065 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250607 + ... + 253083.

It is an arithmetic number, because the mean of its divisors is an integer number (26985420).

Almost surely, 2^623820065 is an apocalyptic number.

It is an amenable number.

623820065 is a deficient number, since it is larger than the sum of its proper divisors (239713375).

623820065 is a wasteful number, since it uses less digits than its factorization.

623820065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 623820065 is about 24976.3901515011. The cubic root of 623820065 is about 854.4495916015.

The spelling of 623820065 in words is "six hundred twenty-three million, eight hundred twenty thousand, sixty-five".