84815345 has 8 divisors (see below), whose sum is σ = 102828264. Its totient is φ = 67152384.

The previous prime is 84815327. The next prime is 84815377. The reversal of 84815345 is 54351848.

It can be written as a sum of positive squares in 4 ways, for example, as 22972849 + 61842496 = 4793^2 + 7864^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84815345 - 2⁸ = 84815089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84815299 and 84815308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86954 + ... + 87923.

It is an arithmetic number, because the mean of its divisors is an integer number (12853533).

Almost surely, 2^84815345 is an apocalyptic number.

It is an amenable number.

84815345 is a deficient number, since it is larger than the sum of its proper divisors (18012919).

84815345 is a wasteful number, since it uses less digits than its factorization.

84815345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174979.

The product of its digits is 76800, while the sum is 38.

The square root of 84815345 is about 9209.5246891466. The cubic root of 84815345 is about 439.3643455616.

The spelling of 84815345 in words is "eighty-four million, eight hundred fifteen thousand, three hundred forty-five".