84030647 has 4 divisors (see below), whose sum is σ = 84099816. Its totient is φ = 83961480.

The previous prime is 84030629. The next prime is 84030649. The reversal of 84030647 is 74603048.

It is a happy number.

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 84030647 - 2⁸ = 84030391 is a prime.

It is a super-2 number, since 2×84030647² = 14122299270477218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84030649) 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, 32729 + ... + 35202.

It is an arithmetic number, because the mean of its divisors is an integer number (21024954).

Almost surely, 2^84030647 is an apocalyptic number.

84030647 is a deficient number, since it is larger than the sum of its proper divisors (69169).

84030647 is a wasteful number, since it uses less digits than its factorization.

84030647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69168.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 84030647 is about 9166.8231683610. The cubic root of 84030647 is about 438.0051690695.

The spelling of 84030647 in words is "eighty-four million, thirty thousand, six hundred forty-seven".