720602231 has 4 divisors (see below), whose sum is σ = 720980832. Its totient is φ = 720223632.

The previous prime is 720602221. The next prime is 720602249. The reversal of 720602231 is 132206027.

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-720602231 is a prime.

It is a super-2 number, since 2×720602231² = 1038535150644354722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720602197 and 720602206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720602221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186431 + ... + 190256.

It is an arithmetic number, because the mean of its divisors is an integer number (180245208).

Almost surely, 2^720602231 is an apocalyptic number.

720602231 is a deficient number, since it is larger than the sum of its proper divisors (378601).

720602231 is a wasteful number, since it uses less digits than its factorization.

720602231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378600.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 720602231 is about 26844.0352965049. The cubic root of 720602231 is about 896.5307723435.

Adding to 720602231 its reverse (132206027), we get a palindrome (852808258).

The spelling of 720602231 in words is "seven hundred twenty million, six hundred two thousand, two hundred thirty-one".