422658 has 20 divisors (see below), whose sum is σ = 947430. Its totient is φ = 140832.

The previous prime is 422657. The next prime is 422689. The reversal of 422658 is 856224.

422658 is a `hidden beast` number, since 4 + 2 + 2 + 658 = 666.

It can be written as a sum of positive squares in only one way, i.e., 363609 + 59049 = 603^2 + 243^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (422657) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1143 + ... + 1466.

2⁴²²⁶⁵⁸ is an apocalyptic number.

422658 is an abundant number, since it is smaller than the sum of its proper divisors (524772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422658 is a wasteful number, since it uses less digits than its factorization.

422658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623 (or 2614 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 422658 is about 650.1215271009. The cubic root of 422658 is about 75.0463713234.

The spelling of 422658 in words is "four hundred twenty-two thousand, six hundred fifty-eight".