420006618 has 12 divisors (see below), whose sum is σ = 910014378. Its totient is φ = 140002200.

The previous prime is 420006589. The next prime is 420006659. The reversal of 420006618 is 816600024.

420006618 is a `hidden beast` number, since 42 + 0 + 0 + 0 + 6 + 618 = 666.

It can be written as a sum of positive squares in only one way, i.e., 364160889 + 55845729 = 19083^2 + 7473^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 420006591 and 420006600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11666833 + ... + 11666868.

Almost surely, 2^420006618 is an apocalyptic number.

420006618 is an abundant number, since it is smaller than the sum of its proper divisors (490007760).

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

420006618 is a wasteful number, since it uses less digits than its factorization.

420006618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23333709 (or 23333706 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 420006618 is about 20494.0629939502. The cubic root of 420006618 is about 748.8911721423.

The spelling of 420006618 in words is "four hundred twenty million, six thousand, six hundred eighteen".