84705747 has 16 divisors (see below), whose sum is σ = 136668672. Its totient is φ = 45555840.

The previous prime is 84705707. The next prime is 84705763. The reversal of 84705747 is 74750748.

It is not a de Polignac number, because 84705747 - 2⁶ = 84705683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84705699 and 84705708.

It is not an unprimeable number, because it can be changed into a prime (84705707) 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 15 ways as a sum of consecutive naturals, for example, 118279 + ... + 118992.

It is an arithmetic number, because the mean of its divisors is an integer number (8541792).

Almost surely, 2^84705747 is an apocalyptic number.

84705747 is a deficient number, since it is larger than the sum of its proper divisors (51962925).

84705747 is a wasteful number, since it uses less digits than its factorization.

84705747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237298.

The product of its (nonzero) digits is 219520, while the sum is 42.

The square root of 84705747 is about 9203.5725128887. The cubic root of 84705747 is about 439.1750157901.

The spelling of 84705747 in words is "eighty-four million, seven hundred five thousand, seven hundred forty-seven".