421627 has 4 divisors (see below), whose sum is σ = 423360. Its totient is φ = 419896.

The previous prime is 421621. The next prime is 421633. The reversal of 421627 is 726124.

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

It is an interprime number because it is at equal distance from previous prime (421621) and next prime (421633).

It is a cyclic number.

It is not a de Polignac number, because 421627 - 2¹¹ = 419579 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421598 and 421607.

It is not an unprimeable number, because it can be changed into a prime (421621) 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, 427 + ... + 1012.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2⁴²¹⁶²⁷ is an apocalyptic number.

421627 is a deficient number, since it is larger than the sum of its proper divisors (1733).

421627 is a wasteful number, since it uses less digits than its factorization.

421627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732.

The product of its digits is 672, while the sum is 22.

The square root of 421627 is about 649.3281142843. The cubic root of 421627 is about 74.9853008230.

The spelling of 421627 in words is "four hundred twenty-one thousand, six hundred twenty-seven".