84643107 has 4 divisors (see below), whose sum is σ = 112857480. Its totient is φ = 56428736.

The previous prime is 84643103. The next prime is 84643123. The reversal of 84643107 is 70134648.

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

It is a cyclic number.

It is not a de Polignac number, because 84643107 - 2² = 84643103 is a prime.

It is a super-2 number, since 2×84643107² = 14328911125226898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84643103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14107182 + ... + 14107187.

It is an arithmetic number, because the mean of its divisors is an integer number (28214370).

Almost surely, 2^84643107 is an apocalyptic number.

84643107 is a deficient number, since it is larger than the sum of its proper divisors (28214373).

84643107 is a wasteful number, since it uses less digits than its factorization.

84643107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28214372.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 84643107 is about 9200.1688571460. The cubic root of 84643107 is about 439.0667322794.

The spelling of 84643107 in words is "eighty-four million, six hundred forty-three thousand, one hundred seven".