84519745 has 8 divisors (see below), whose sum is σ = 101591784. Its totient is φ = 67503744.

The previous prime is 84519727. The next prime is 84519761. The reversal of 84519745 is 54791548.

It can be written as a sum of positive squares in 4 ways, for example, as 1327104 + 83192641 = 1152^2 + 9121^2 .

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 84519745 - 2⁹ = 84519233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 10614 + ... + 16783.

It is an arithmetic number, because the mean of its divisors is an integer number (12698973).

Almost surely, 2^84519745 is an apocalyptic number.

It is an amenable number.

84519745 is a deficient number, since it is larger than the sum of its proper divisors (17072039).

84519745 is a wasteful number, since it uses less digits than its factorization.

84519745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28019.

The product of its digits is 201600, while the sum is 43.

The square root of 84519745 is about 9193.4620791082. The cubic root of 84519745 is about 438.8533245289.

It can be divided in two parts, 84519 and 745, that added together give a square (85264 = 292²).

The spelling of 84519745 in words is "eighty-four million, five hundred nineteen thousand, seven hundred forty-five".