720337361 has 4 divisors (see below), whose sum is σ = 720394224. Its totient is φ = 720280500.

The previous prime is 720337339. The next prime is 720337381. The reversal of 720337361 is 163733027.

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.

It is a cyclic number.

It is not a de Polignac number, because 720337361 - 2¹⁴ = 720320977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (720337381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146 + ... + 37956.

It is an arithmetic number, because the mean of its divisors is an integer number (180098556).

Almost surely, 2^720337361 is an apocalyptic number.

It is an amenable number.

720337361 is a deficient number, since it is larger than the sum of its proper divisors (56863).

720337361 is a wasteful number, since it uses less digits than its factorization.

720337361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56862.

The product of its (nonzero) digits is 15876, while the sum is 32.

The square root of 720337361 is about 26839.1013448662. The cubic root of 720337361 is about 896.4209136743.

The spelling of 720337361 in words is "seven hundred twenty million, three hundred thirty-seven thousand, three hundred sixty-one".