616326405 has 16 divisors (see below), whose sum is σ = 986598144. Its totient is φ = 328548800.

The previous prime is 616326401. The next prime is 616326419. The reversal of 616326405 is 504623616.

It is not a de Polignac number, because 616326405 - 2² = 616326401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616326401) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 26527 + ... + 44003.

It is an arithmetic number, because the mean of its divisors is an integer number (61662384).

Almost surely, 2^616326405 is an apocalyptic number.

It is an amenable number.

616326405 is a deficient number, since it is larger than the sum of its proper divisors (370271739).

616326405 is a wasteful number, since it uses less digits than its factorization.

616326405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19836.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 616326405 is about 24825.9220372578. The cubic root of 616326405 is about 851.0144312920.

The spelling of 616326405 in words is "six hundred sixteen million, three hundred twenty-six thousand, four hundred five".