8720023641 has 8 divisors (see below), whose sum is σ = 13287655104. Its totient is φ = 4982870640.

The previous prime is 8720023619. The next prime is 8720023661. The reversal of 8720023641 is 1463200278.

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

It is not a de Polignac number, because 8720023641 - 2⁷ = 8720023513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8720023661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207619590 + ... + 207619631.

It is an arithmetic number, because the mean of its divisors is an integer number (1660956888).

Almost surely, 2^8720023641 is an apocalyptic number.

It is an amenable number.

8720023641 is a deficient number, since it is larger than the sum of its proper divisors (4567631463).

8720023641 is a wasteful number, since it uses less digits than its factorization.

8720023641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415239231.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 8720023641 is about 93381.0668229915. The cubic root of 8720023641 is about 2058.2867932298.

The spelling of 8720023641 in words is "eight billion, seven hundred twenty million, twenty-three thousand, six hundred forty-one".