406622085 has 16 divisors (see below), whose sum is σ = 658832640. Its totient is φ = 214119360.

The previous prime is 406622057. The next prime is 406622087. The reversal of 406622085 is 580226604.

It is not a de Polignac number, because 406622085 - 2²¹ = 404524933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406622087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170386 + ... + 172755.

It is an arithmetic number, because the mean of its divisors is an integer number (41177040).

Almost surely, 2^406622085 is an apocalyptic number.

It is an amenable number.

406622085 is a deficient number, since it is larger than the sum of its proper divisors (252210555).

406622085 is a wasteful number, since it uses less digits than its factorization.

406622085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343228.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 406622085 is about 20164.8725510478. The cubic root of 406622085 is about 740.8500609968.

Adding to 406622085 its reverse (580226604), we get a palindrome (986848689).

The spelling of 406622085 in words is "four hundred six million, six hundred twenty-two thousand, eighty-five".