84638577 has 8 divisors (see below), whose sum is σ = 115476064. Its totient is φ = 55113408.

The previous prime is 84638557. The next prime is 84638579. The reversal of 84638577 is 77583648.

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

It is not a de Polignac number, because 84638577 - 2⁶ = 84638513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84638579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327928 + ... + 328185.

It is an arithmetic number, because the mean of its divisors is an integer number (14434508).

Almost surely, 2^84638577 is an apocalyptic number.

It is an amenable number.

84638577 is a deficient number, since it is larger than the sum of its proper divisors (30837487).

84638577 is a wasteful number, since it uses less digits than its factorization.

84638577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656159.

The product of its digits is 1128960, while the sum is 48.

The square root of 84638577 is about 9199.9226627184. The cubic root of 84638577 is about 439.0588993605.

The spelling of 84638577 in words is "eighty-four million, six hundred thirty-eight thousand, five hundred seventy-seven".