618427 has 4 divisors (see below), whose sum is σ = 620136. Its totient is φ = 616720.

The previous prime is 618421. The next prime is 618437. The reversal of 618427 is 724816.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 618395 and 618404.

It is not an unprimeable number, because it can be changed into a prime (618421) 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, 73 + ... + 1114.

It is an arithmetic number, because the mean of its divisors is an integer number (155034).

2⁶¹⁸⁴²⁷ is an apocalyptic number.

618427 is a deficient number, since it is larger than the sum of its proper divisors (1709).

618427 is a wasteful number, since it uses less digits than its factorization.

618427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708.

The product of its digits is 2688, while the sum is 28.

The square root of 618427 is about 786.4012970488. The cubic root of 618427 is about 85.1980158530.

The spelling of 618427 in words is "six hundred eighteen thousand, four hundred twenty-seven".