84664358 has 4 divisors (see below), whose sum is σ = 126996540. Its totient is φ = 42332178.

The previous prime is 84664339. The next prime is 84664367. The reversal of 84664358 is 85346648.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent 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 as a sum of consecutive naturals, namely, 21166088 + ... + 21166091.

It is an arithmetic number, because the mean of its divisors is an integer number (31749135).

Almost surely, 2^84664358 is an apocalyptic number.

84664358 is a deficient number, since it is larger than the sum of its proper divisors (42332182).

84664358 is a wasteful number, since it uses less digits than its factorization.

84664358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42332181.

The product of its digits is 552960, while the sum is 44.

The square root of 84664358 is about 9201.3237091192. The cubic root of 84664358 is about 439.1034741032.

The spelling of 84664358 in words is "eighty-four million, six hundred sixty-four thousand, three hundred fifty-eight".