406622 has 4 divisors (see below), whose sum is σ = 609936. Its totient is φ = 203310.

The previous prime is 406591. The next prime is 406631. The reversal of 406622 is 226604.

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

It is a junction number, because it is equal to n+sod(n) for n = 406594 and 406603.

It is a congruent number.

It is an unprimeable number.

406622 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101654 + ... + 101657.

It is an arithmetic number, because the mean of its divisors is an integer number (152484).

2⁴⁰⁶⁶²² is an apocalyptic number.

406622 is a deficient number, since it is larger than the sum of its proper divisors (203314).

406622 is a wasteful number, since it uses less digits than its factorization.

406622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203313.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 406622 is about 637.6691932342. The cubic root of 406622 is about 74.0850009375.

The spelling of 406622 in words is "four hundred six thousand, six hundred twenty-two".