8478707 has 4 divisors (see below), whose sum is σ = 8503080. Its totient is φ = 8454336.

The previous prime is 8478689. The next prime is 8478709. The reversal of 8478707 is 7078748.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8478707 - 2¹² = 8474611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8478709) 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, 11657 + ... + 12362.

It is an arithmetic number, because the mean of its divisors is an integer number (2125770).

Almost surely, 2^8478707 is an apocalyptic number.

8478707 is a deficient number, since it is larger than the sum of its proper divisors (24373).

8478707 is a wasteful number, since it uses less digits than its factorization.

8478707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24372.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 8478707 is about 2911.8219382373. The cubic root of 8478707 is about 203.9121994971.

Adding to 8478707 its sum of digits (41), we get a palindrome (8478748).

The spelling of 8478707 in words is "eight million, four hundred seventy-eight thousand, seven hundred seven".