8280745 has 8 divisors (see below), whose sum is σ = 10840320. Its totient is φ = 6022320.

The previous prime is 8280743. The next prime is 8280749. The reversal of 8280745 is 5470828.

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

It is not a de Polignac number, because 8280745 - 2¹ = 8280743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8280745.

It is not an unprimeable number, because it can be changed into a prime (8280743) 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, 75225 + ... + 75334.

It is an arithmetic number, because the mean of its divisors is an integer number (1355040).

Almost surely, 2^8280745 is an apocalyptic number.

It is an amenable number.

8280745 is a deficient number, since it is larger than the sum of its proper divisors (2559575).

8280745 is a wasteful number, since it uses less digits than its factorization.

8280745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150575.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 8280745 is about 2877.6283637746. The cubic root of 8280745 is about 202.3126957779.

It can be divided in two parts, 8280 and 745, that added together give a square (9025 = 95²).

The spelling of 8280745 in words is "eight million, two hundred eighty thousand, seven hundred forty-five".