2705120623 has 4 divisors (see below), whose sum is σ = 2715898248. Its totient is φ = 2694343000.

The previous prime is 2705120603. The next prime is 2705120633. The reversal of 2705120623 is 3260215072.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2705120623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2705120591 and 2705120600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705120603) 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, 5388436 + ... + 5388937.

It is an arithmetic number, because the mean of its divisors is an integer number (678974562).

Almost surely, 2^2705120623 is an apocalyptic number.

2705120623 is a deficient number, since it is larger than the sum of its proper divisors (10777625).

2705120623 is a wasteful number, since it uses less digits than its factorization.

2705120623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10777624.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2705120623 is about 52010.7741049871. The cubic root of 2705120623 is about 1393.3563840434.

Adding to 2705120623 its reverse (3260215072), we get a palindrome (5965335695).

It can be divided in two parts, 27051 and 20623, that added together give a palindrome (47674).

The spelling of 2705120623 in words is "two billion, seven hundred five million, one hundred twenty thousand, six hundred twenty-three".