6354645005 has 4 divisors (see below), whose sum is σ = 7625574012. Its totient is φ = 5083716000.

The previous prime is 6354644993. The next prime is 6354645007. The reversal of 6354645005 is 5005464536.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3656258089 + 2698386916 = 60467^2 + 51946^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6354645005 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6354645005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6354645007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635464496 + ... + 635464505.

It is an arithmetic number, because the mean of its divisors is an integer number (1906393503).

Almost surely, 2^6354645005 is an apocalyptic number.

It is an amenable number.

6354645005 is a deficient number, since it is larger than the sum of its proper divisors (1270929007).

6354645005 is a wasteful number, since it uses less digits than its factorization.

6354645005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270929006.

The product of its (nonzero) digits is 216000, while the sum is 38.

The square root of 6354645005 is about 79716.0272780825. The cubic root of 6354645005 is about 1852.2393146461.

The spelling of 6354645005 in words is "six billion, three hundred fifty-four million, six hundred forty-five thousand, five".