8280727645 has 8 divisors (see below), whose sum is σ = 9988899840. Its totient is φ = 6589897680.

The previous prime is 8280727643. The next prime is 8280727661. The reversal of 8280727645 is 5467270828.

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

It is not a de Polignac number, because 8280727645 - 2¹ = 8280727643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8280727643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4334505 + ... + 4336414.

It is an arithmetic number, because the mean of its divisors is an integer number (1248612480).

Almost surely, 2^8280727645 is an apocalyptic number.

It is an amenable number.

8280727645 is a deficient number, since it is larger than the sum of its proper divisors (1708172195).

8280727645 is a wasteful number, since it uses less digits than its factorization.

8280727645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8671115.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 8280727645 is about 90998.5035316516. The cubic root of 8280727645 is about 2023.1255444040.

The spelling of 8280727645 in words is "eight billion, two hundred eighty million, seven hundred twenty-seven thousand, six hundred forty-five".