84534621 has 4 divisors (see below), whose sum is σ = 112712832. Its totient is φ = 56356412.

The previous prime is 84534607. The next prime is 84534631. The reversal of 84534621 is 12643548.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84534621 - 2¹⁰ = 84533597 is a prime.

It is a super-2 number, since 2×84534621² = 14292204295227282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84534631) 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, 14089101 + ... + 14089106.

It is an arithmetic number, because the mean of its divisors is an integer number (28178208).

Almost surely, 2^84534621 is an apocalyptic number.

It is an amenable number.

84534621 is a deficient number, since it is larger than the sum of its proper divisors (28178211).

84534621 is a wasteful number, since it uses less digits than its factorization.

84534621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28178210.

The product of its digits is 23040, while the sum is 33.

The square root of 84534621 is about 9194.2710967210. The cubic root of 84534621 is about 438.8790699887.

The spelling of 84534621 in words is "eighty-four million, five hundred thirty-four thousand, six hundred twenty-one".