720274433 has 4 divisors (see below), whose sum is σ = 720377280. Its totient is φ = 720171588.

The previous prime is 720274409. The next prime is 720274441. The reversal of 720274433 is 334472027.

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 an emirpimes, since its reverse is a distinct semiprime: 334472027 = 12203 ⋅27409.

It is a cyclic number.

It is not a de Polignac number, because 720274433 - 2¹⁶ = 720208897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 720274433.

It is not an unprimeable number, because it can be changed into a prime (720277433) 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, 40085 + ... + 55202.

It is an arithmetic number, because the mean of its divisors is an integer number (180094320).

Almost surely, 2^720274433 is an apocalyptic number.

It is an amenable number.

720274433 is a deficient number, since it is larger than the sum of its proper divisors (102847).

720274433 is an equidigital number, since it uses as much as digits as its factorization.

720274433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102846.

The product of its (nonzero) digits is 28224, while the sum is 32.

The square root of 720274433 is about 26837.9289998316. The cubic root of 720274433 is about 896.3948094158.

The spelling of 720274433 in words is "seven hundred twenty million, two hundred seventy-four thousand, four hundred thirty-three".