720164263 has 24 divisors (see below), whose sum is σ = 915368928. Its totient is φ = 554366592.

The previous prime is 720164261. The next prime is 720164299. The reversal of 720164263 is 362461027.

It is not a de Polignac number, because 720164263 - 2¹ = 720164261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720164261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35545 + ... + 51997.

It is an arithmetic number, because the mean of its divisors is an integer number (38140372).

Almost surely, 2^720164263 is an apocalyptic number.

720164263 is a deficient number, since it is larger than the sum of its proper divisors (195204665).

720164263 is a wasteful number, since it uses less digits than its factorization.

720164263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16523 (or 16510 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 720164263 is about 26835.8764157238. The cubic root of 720164263 is about 896.3491042201.

The spelling of 720164263 in words is "seven hundred twenty million, one hundred sixty-four thousand, two hundred sixty-three".