420684806 has 16 divisors (see below), whose sum is σ = 636768000. Its totient is φ = 208437768.

The previous prime is 420684793. The next prime is 420684883. The reversal of 420684806 is 608486024.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 420684806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102665 + ... + 106683.

It is an arithmetic number, because the mean of its divisors is an integer number (39798000).

Almost surely, 2^420684806 is an apocalyptic number.

420684806 is a deficient number, since it is larger than the sum of its proper divisors (216083194).

420684806 is a wasteful number, since it uses less digits than its factorization.

420684806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483.

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 420684806 is about 20510.6022827220. The cubic root of 420684806 is about 749.2940355459.

The spelling of 420684806 in words is "four hundred twenty million, six hundred eighty-four thousand, eight hundred six".