427715 has 8 divisors (see below), whose sum is σ = 517968. Its totient is φ = 339040.

The previous prime is 427711. The next prime is 427717. The reversal of 427715 is 517724.

It is a Cunningham number, because it is equal to 654²-1.

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

It is not a de Polignac number, because 427715 - 2² = 427711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329 + ... + 981.

It is an arithmetic number, because the mean of its divisors is an integer number (64746).

2⁴²⁷⁷¹⁵ is an apocalyptic number.

427715 is a deficient number, since it is larger than the sum of its proper divisors (90253).

427715 is a wasteful number, since it uses less digits than its factorization.

427715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789.

The product of its digits is 1960, while the sum is 26.

The square root of 427715 is about 653.9992354736. Note that the first 3 decimals coincide. The cubic root of 427715 is about 75.3444893460.

Subtracting 427715 from its reverse (517724), we obtain a palindrome (90009).

The spelling of 427715 in words is "four hundred twenty-seven thousand, seven hundred fifteen".