84328657 has 24 divisors (see below), whose sum is σ = 101143080. Its totient is φ = 70076160.

The previous prime is 84328609. The next prime is 84328663. The reversal of 84328657 is 75682348.

It can be written as a sum of positive squares in 4 ways, for example, as 9834496 + 74494161 = 3136^2 + 8631^2 .

It is not a de Polignac number, because 84328657 - 2¹⁵ = 84295889 is a prime.

It is a super-2 number, since 2×84328657² = 14222644782847298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84328697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265863 + ... + 266179.

It is an arithmetic number, because the mean of its divisors is an integer number (4214295).

Almost surely, 2^84328657 is an apocalyptic number.

It is an amenable number.

84328657 is a deficient number, since it is larger than the sum of its proper divisors (16814423).

84328657 is a wasteful number, since it uses less digits than its factorization.

84328657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 474 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 84328657 is about 9183.0635955546. The cubic root of 84328657 is about 438.5223451344.

The spelling of 84328657 in words is "eighty-four million, three hundred twenty-eight thousand, six hundred fifty-seven".