7985745 has 24 divisors (see below), whose sum is σ = 14167296. Its totient is φ = 4159008.

The previous prime is 7985743. The next prime is 7985749. The reversal of 7985745 is 5475897.

7985745 is a `hidden beast` number, since 79 + 8 + 574 + 5 = 666.

It is not a de Polignac number, because 7985745 - 2¹ = 7985743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is a d-powerful number, because it can be written as 7⁵ + 9⁷ + 8⁷ + 5 + 7⁷ + 4⁹ + 5⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 7985745.

It is not an unprimeable number, because it can be changed into a prime (7985741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129 + ... + 3998.

It is an arithmetic number, because the mean of its divisors is an integer number (590304).

Almost surely, 2^7985745 is an apocalyptic number.

It is an amenable number.

7985745 is a deficient number, since it is larger than the sum of its proper divisors (6181551).

7985745 is a wasteful number, since it uses less digits than its factorization.

7985745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4181 (or 4178 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 7985745 is about 2825.9060493937. The cubic root of 7985745 is about 199.8811377061.

The spelling of 7985745 in words is "seven million, nine hundred eighty-five thousand, seven hundred forty-five".