84343618 has 4 divisors (see below), whose sum is σ = 126515430. Its totient is φ = 42171808.

The previous prime is 84343559. The next prime is 84343631. The reversal of 84343618 is 81634348.

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., 84327489 + 16129 = 9183^2 + 127^2 .

It is a super-2 number, since 2×84343618² = 14227691794659848, which contains 22 as substring.

It is an unprimeable number.

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, 21085903 + ... + 21085906.

Almost surely, 2^84343618 is an apocalyptic number.

84343618 is a deficient number, since it is larger than the sum of its proper divisors (42171812).

84343618 is a wasteful number, since it uses less digits than its factorization.

84343618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42171811.

The product of its digits is 55296, while the sum is 37.

The square root of 84343618 is about 9183.8781568573. The cubic root of 84343618 is about 438.5482767891.

The spelling of 84343618 in words is "eighty-four million, three hundred forty-three thousand, six hundred eighteen".