720402323 has 8 divisors (see below), whose sum is σ = 738255168. Its totient is φ = 702654784.

The previous prime is 720402259. The next prime is 720402329. The reversal of 720402323 is 323204027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 720402323 - 2⁶ = 720402259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720402329) 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 7 ways as a sum of consecutive naturals, for example, 12386 + ... + 39927.

It is an arithmetic number, because the mean of its divisors is an integer number (92281896).

Almost surely, 2^720402323 is an apocalyptic number.

720402323 is a deficient number, since it is larger than the sum of its proper divisors (17852845).

720402323 is a wasteful number, since it uses less digits than its factorization.

720402323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52653.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 720402323 is about 26840.3115294886. The cubic root of 720402323 is about 896.4478600969.

The spelling of 720402323 in words is "seven hundred twenty million, four hundred two thousand, three hundred twenty-three".