720196393 has 4 divisors (see below), whose sum is σ = 823081600. Its totient is φ = 617311188.

The previous prime is 720196361. The next prime is 720196397. The reversal of 720196393 is 393691027.

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.

It is a cyclic number.

It is not a de Polignac number, because 720196393 - 2⁵ = 720196361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720196397) 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, 51442593 + ... + 51442606.

It is an arithmetic number, because the mean of its divisors is an integer number (205770400).

Almost surely, 2^720196393 is an apocalyptic number.

It is an amenable number.

720196393 is a deficient number, since it is larger than the sum of its proper divisors (102885207).

720196393 is a wasteful number, since it uses less digits than its factorization.

720196393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102885206.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 720196393 is about 26836.4750479641. The cubic root of 720196393 is about 896.3624341737.

The spelling of 720196393 in words is "seven hundred twenty million, one hundred ninety-six thousand, three hundred ninety-three".