84633643 has 2 divisors, whose sum is σ = 84633644. Its totient is φ = 84633642.

The previous prime is 84633641. The next prime is 84633673. The reversal of 84633643 is 34633648.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84633643 - 2¹ = 84633641 is a prime.

Together with 84633641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84633641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42316821 + 42316822.

It is an arithmetic number, because the mean of its divisors is an integer number (42316822).

Almost surely, 2^84633643 is an apocalyptic number.

84633643 is a deficient number, since it is larger than the sum of its proper divisors (1).

84633643 is an equidigital number, since it uses as much as digits as its factorization.

84633643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 37.

The square root of 84633643 is about 9199.6545043822. The cubic root of 84633643 is about 439.0503675586.

The spelling of 84633643 in words is "eighty-four million, six hundred thirty-three thousand, six hundred forty-three".