84075745 has 8 divisors (see below), whose sum is σ = 108651816. Its totient is φ = 62086656.

The previous prime is 84075731. The next prime is 84075749. The reversal of 84075745 is 54757048.

It can be written as a sum of positive squares in 4 ways, for example, as 5184 + 84070561 = 72^2 + 9169^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 84075745 - 2²¹ = 81978593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84075698 and 84075707.

It is not an unprimeable number, because it can be changed into a prime (84075749) 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, 646672 + ... + 646801.

It is an arithmetic number, because the mean of its divisors is an integer number (13581477).

Almost surely, 2^84075745 is an apocalyptic number.

It is an amenable number.

84075745 is a deficient number, since it is larger than the sum of its proper divisors (24576071).

84075745 is a wasteful number, since it uses less digits than its factorization.

84075745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293491.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 84075745 is about 9169.2826873207. The cubic root of 84075745 is about 438.0835120119.

The spelling of 84075745 in words is "eighty-four million, seventy-five thousand, seven hundred forty-five".