84615321 has 32 divisors (see below), whose sum is σ = 135290880. Its totient is φ = 45993024.

The previous prime is 84615317. The next prime is 84615329. The reversal of 84615321 is 12351648.

It is not a de Polignac number, because 84615321 - 2² = 84615317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84615329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115071 + ... + 115803.

It is an arithmetic number, because the mean of its divisors is an integer number (4227840).

Almost surely, 2^84615321 is an apocalyptic number.

It is an amenable number.

84615321 is a deficient number, since it is larger than the sum of its proper divisors (50675559).

84615321 is a wasteful number, since it uses less digits than its factorization.

84615321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005.

The product of its digits is 5760, while the sum is 30.

The square root of 84615321 is about 9198.6586522166. The cubic root of 84615321 is about 439.0186825174.

Adding to 84615321 its reverse (12351648), we get a palindrome (96966969).

The spelling of 84615321 in words is "eighty-four million, six hundred fifteen thousand, three hundred twenty-one".