130720673 has 4 divisors (see below), whose sum is σ = 130805040. Its totient is φ = 130636308.

The previous prime is 130720663. The next prime is 130720679. The reversal of 130720673 is 376027031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130720673 - 2⁶ = 130720609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130720679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39815 + ... + 42972.

It is an arithmetic number, because the mean of its divisors is an integer number (32701260).

Almost surely, 2^130720673 is an apocalyptic number.

It is an amenable number.

130720673 is a deficient number, since it is larger than the sum of its proper divisors (84367).

130720673 is an equidigital number, since it uses as much as digits as its factorization.

130720673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84366.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 130720673 is about 11433.3141739392. The cubic root of 130720673 is about 507.5140756610.

The spelling of 130720673 in words is "one hundred thirty million, seven hundred twenty thousand, six hundred seventy-three".