84047618 has 4 divisors (see below), whose sum is σ = 126071430. Its totient is φ = 42023808.

The previous prime is 84047591. The next prime is 84047627. The reversal of 84047618 is 81674048.

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., 61418569 + 22629049 = 7837^2 + 4757^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21011903 + ... + 21011906.

Almost surely, 2^84047618 is an apocalyptic number.

84047618 is a deficient number, since it is larger than the sum of its proper divisors (42023812).

84047618 is a wasteful number, since it uses less digits than its factorization.

84047618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42023811.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 84047618 is about 9167.7487967330. The cubic root of 84047618 is about 438.0346538889.

The spelling of 84047618 in words is "eighty-four million, forty-seven thousand, six hundred eighteen".