8242705 has 8 divisors (see below), whose sum is σ = 10473192. Its totient is φ = 6206208.

The previous prime is 8242697. The next prime is 8242723. The reversal of 8242705 is 5072428.

It can be written as a sum of positive squares in 4 ways, for example, as 199809 + 8042896 = 447^2 + 2836^2 .

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 8242705 - 2³ = 8242697 is a prime.

It is a Duffinian number.

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, 48402 + ... + 48571.

It is an arithmetic number, because the mean of its divisors is an integer number (1309149).

Almost surely, 2^8242705 is an apocalyptic number.

8242705 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8242705 is a deficient number, since it is larger than the sum of its proper divisors (2230487).

8242705 is a wasteful number, since it uses less digits than its factorization.

8242705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96995.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 8242705 is about 2871.0111459205. The cubic root of 8242705 is about 202.0024262036.

The spelling of 8242705 in words is "eight million, two hundred forty-two thousand, seven hundred five".