405606616 has 32 divisors (see below), whose sum is σ = 794787840. Its totient is φ = 193864608.

The previous prime is 405606611. The next prime is 405606647. The reversal of 405606616 is 616606504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405606611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3625 + ... + 28711.

It is an arithmetic number, because the mean of its divisors is an integer number (24837120).

Almost surely, 2^405606616 is an apocalyptic number.

It is an amenable number.

405606616 is a deficient number, since it is larger than the sum of its proper divisors (389181224).

405606616 is a wasteful number, since it uses less digits than its factorization.

405606616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25183 (or 25179 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 405606616 is about 20139.6776538255. The cubic root of 405606616 is about 740.2328315315.

The spelling of 405606616 in words is "four hundred five million, six hundred six thousand, six hundred sixteen".