720727433 has 4 divisors (see below), whose sum is σ = 720791808. Its totient is φ = 720663060.

The previous prime is 720727417. The next prime is 720727439. The reversal of 720727433 is 334727027.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 334727027 = 23 ⋅14553349.

It is a cyclic number.

It is not a de Polignac number, because 720727433 - 2⁴ = 720727417 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 720727393 and 720727402.

It is not an unprimeable number, because it can be changed into a prime (720727439) 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, 10541 + ... + 39402.

It is an arithmetic number, because the mean of its divisors is an integer number (180197952).

Almost surely, 2^720727433 is an apocalyptic number.

It is an amenable number.

720727433 is a deficient number, since it is larger than the sum of its proper divisors (64375).

720727433 is a wasteful number, since it uses less digits than its factorization.

720727433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64374.

The product of its (nonzero) digits is 49392, while the sum is 35.

The square root of 720727433 is about 26846.3672216559. The cubic root of 720727433 is about 896.5826923166.

The spelling of 720727433 in words is "seven hundred twenty million, seven hundred twenty-seven thousand, four hundred thirty-three".