84320757 has 24 divisors (see below), whose sum is σ = 126794304. Its totient is φ = 55997568.

The previous prime is 84320749. The next prime is 84320771. The reversal of 84320757 is 75702348.

It is not a de Polignac number, because 84320757 - 2³ = 84320749 is a prime.

It is a super-2 number, since 2×84320757² = 14219980122106098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84320707) 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, 85288 + ... + 86270.

It is an arithmetic number, because the mean of its divisors is an integer number (5283096).

Almost surely, 2^84320757 is an apocalyptic number.

It is an amenable number.

84320757 is a deficient number, since it is larger than the sum of its proper divisors (42473547).

84320757 is an equidigital number, since it uses as much as digits as its factorization.

84320757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 84320757 is about 9182.6334458041. The cubic root of 84320757 is about 438.5086509572.

The spelling of 84320757 in words is "eighty-four million, three hundred twenty thousand, seven hundred fifty-seven".