427691 has 8 divisors (see below), whose sum is σ = 475200. Its totient is φ = 381640.

The previous prime is 427681. The next prime is 427711. The reversal of 427691 is 196724.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427691 is a prime.

It is a d-powerful number, because it can be written as 4⁹ + 2⁹ + 6⁶ + 7⁶ + 9³ + 1 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 427691.

It is not an unprimeable number, because it can be changed into a prime (427621) 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, 320 + ... + 978.

It is an arithmetic number, because the mean of its divisors is an integer number (59400).

2⁴²⁷⁶⁹¹ is an apocalyptic number.

427691 is a deficient number, since it is larger than the sum of its proper divisors (47509).

427691 is a wasteful number, since it uses less digits than its factorization.

427691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729.

The product of its digits is 3024, while the sum is 29.

The square root of 427691 is about 653.9808865709. The cubic root of 427691 is about 75.3430800730.

The spelling of 427691 in words is "four hundred twenty-seven thousand, six hundred ninety-one".