130720605 has 16 divisors (see below), whose sum is σ = 210682944. Its totient is φ = 69207680.

The previous prime is 130720573. The next prime is 130720609. The reversal of 130720605 is 506027031.

It is not a de Polignac number, because 130720605 - 2⁵ = 130720573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130720609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29751 + ... + 33860.

It is an arithmetic number, because the mean of its divisors is an integer number (13167684).

Almost surely, 2^130720605 is an apocalyptic number.

130720605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130720605 is a deficient number, since it is larger than the sum of its proper divisors (79962339).

130720605 is a wasteful number, since it uses less digits than its factorization.

130720605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63756.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 130720605 is about 11433.3112001729. The cubic root of 130720605 is about 507.5139876592.

Adding to 130720605 its reverse (506027031), we get a palindrome (636747636).

It can be divided in two parts, 1307 and 20605, that added together give a palindrome (21912).

The spelling of 130720605 in words is "one hundred thirty million, seven hundred twenty thousand, six hundred five".