720173007 has 6 divisors (see below), whose sum is σ = 1040249912. Its totient is φ = 480115332.

The previous prime is 720172909. The next prime is 720173009. The reversal of 720173007 is 700371027.

It is not a de Polignac number, because 720173007 - 2⁷ = 720172879 is a prime.

It is a super-2 number, since 2×720173007² = 1037298320022844098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720173009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40009603 + ... + 40009620.

Almost surely, 2^720173007 is an apocalyptic number.

720173007 is a deficient number, since it is larger than the sum of its proper divisors (320076905).

720173007 is a wasteful number, since it uses less digits than its factorization.

720173007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80019229 (or 80019226 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 27.

The square root of 720173007 is about 26836.0393314662. The cubic root of 720173007 is about 896.3527319318.

It can be divided in two parts, 7201 and 73007, that added together give a palindrome (80208).

The spelling of 720173007 in words is "seven hundred twenty million, one hundred seventy-three thousand, seven".