84030865 has 4 divisors (see below), whose sum is σ = 100837044. Its totient is φ = 67224688.

The previous prime is 84030851. The next prime is 84030871. The reversal of 84030865 is 56803048.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37736449 + 46294416 = 6143^2 + 6804^2 .

It is a cyclic number.

It is not a de Polignac number, because 84030865 - 2⁵ = 84030833 is a prime.

It is a super-2 number, since 2×84030865² = 14122372545296450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84030865.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8403082 + ... + 8403091.

It is an arithmetic number, because the mean of its divisors is an integer number (25209261).

Almost surely, 2^84030865 is an apocalyptic number.

It is an amenable number.

84030865 is a deficient number, since it is larger than the sum of its proper divisors (16806179).

84030865 is a wasteful number, since it uses less digits than its factorization.

84030865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16806178.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 84030865 is about 9166.8350590594. The cubic root of 84030865 is about 438.0055478402.

The spelling of 84030865 in words is "eighty-four million, thirty thousand, eight hundred sixty-five".