84574018 has 4 divisors (see below), whose sum is σ = 126861030. Its totient is φ = 42287008.

The previous prime is 84574001. The next prime is 84574019. The reversal of 84574018 is 81047548.

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., 65885689 + 18688329 = 8117^2 + 4323^2 .

It is not an unprimeable number, because it can be changed into a prime (84574019) 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 as a sum of consecutive naturals, namely, 21143503 + ... + 21143506.

Almost surely, 2^84574018 is an apocalyptic number.

84574018 is a deficient number, since it is larger than the sum of its proper divisors (42287012).

84574018 is a wasteful number, since it uses less digits than its factorization.

84574018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42287011.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 84574018 is about 9196.4133225948. The cubic root of 84574018 is about 438.9472386402.

The spelling of 84574018 in words is "eighty-four million, five hundred seventy-four thousand, eighteen".