84560018 has 4 divisors (see below), whose sum is σ = 126840030. Its totient is φ = 42280008.

The previous prime is 84559991. The next prime is 84560101. The reversal of 84560018 is 81006548.

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

It can be written as a sum of positive squares in only one way, i.e., 68343289 + 16216729 = 8267^2 + 4027^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21140003 + ... + 21140006.

Almost surely, 2^84560018 is an apocalyptic number.

84560018 is a deficient number, since it is larger than the sum of its proper divisors (42280012).

84560018 is a wasteful number, since it uses less digits than its factorization.

84560018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42280011.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 84560018 is about 9195.6521247816. The cubic root of 84560018 is about 438.9230168575.

The spelling of 84560018 in words is "eighty-four million, five hundred sixty thousand, eighteen".