720248971 has 4 divisors (see below), whose sum is σ = 775652752. Its totient is φ = 664845192.

The previous prime is 720248957. The next prime is 720248987. The reversal of 720248971 is 179842027.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 720248971 - 2²⁵ = 686694539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720248171) 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, 27701871 + ... + 27701896.

It is an arithmetic number, because the mean of its divisors is an integer number (193913188).

Almost surely, 2^720248971 is an apocalyptic number.

720248971 is a deficient number, since it is larger than the sum of its proper divisors (55403781).

720248971 is a wasteful number, since it uses less digits than its factorization.

720248971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55403780.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 720248971 is about 26837.4546296775. The cubic root of 720248971 is about 896.3842466485.

The spelling of 720248971 in words is "seven hundred twenty million, two hundred forty-eight thousand, nine hundred seventy-one".