720326133 has 6 divisors (see below), whose sum is σ = 1040471094. Its totient is φ = 480217416.

The previous prime is 720326107. The next prime is 720326197. The reversal of 720326133 is 331623027.

It can be written as a sum of positive squares in only one way, i.e., 637916049 + 82410084 = 25257^2 + 9078^2 .

It is not a de Polignac number, because 720326133 - 2⁸ = 720325877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720326097 and 720326106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720322133) 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, 40018110 + ... + 40018127.

It is an arithmetic number, because the mean of its divisors is an integer number (173411849).

Almost surely, 2^720326133 is an apocalyptic number.

It is an amenable number.

720326133 is a deficient number, since it is larger than the sum of its proper divisors (320144961).

720326133 is a wasteful number, since it uses less digits than its factorization.

720326133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80036243 (or 80036240 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 720326133 is about 26838.8921716229. The cubic root of 720326133 is about 896.4162561037.

The spelling of 720326133 in words is "seven hundred twenty million, three hundred twenty-six thousand, one hundred thirty-three".