663005305405 has 8 divisors (see below), whose sum is σ = 795610992384. Its totient is φ = 530401160400.

The previous prime is 663005305379. The next prime is 663005305409. The reversal of 663005305405 is 504503500366.

663005305405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 663005305405 - 2¹⁷ = 663005174333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663005305409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1038960 + ... + 1550950.

It is an arithmetic number, because the mean of its divisors is an integer number (99451374048).

Almost surely, 2^663005305405 is an apocalyptic number.

It is an amenable number.

663005305405 is a deficient number, since it is larger than the sum of its proper divisors (132605686979).

663005305405 is a wasteful number, since it uses less digits than its factorization.

663005305405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770987.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 663005305405 in words is "six hundred sixty-three billion, five million, three hundred five thousand, four hundred five".