6445303645 has 8 divisors (see below), whose sum is σ = 8437488480. Its totient is φ = 4687493520.

The previous prime is 6445303643. The next prime is 6445303673. The reversal of 6445303645 is 5463035446.

It is a happy number.

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

It is not a de Polignac number, because 6445303645 - 2¹ = 6445303643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6445303598 and 6445303607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445303643) 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, 58593615 + ... + 58593724.

It is an arithmetic number, because the mean of its divisors is an integer number (1054686060).

Almost surely, 2^6445303645 is an apocalyptic number.

It is an amenable number.

6445303645 is a deficient number, since it is larger than the sum of its proper divisors (1992184835).

6445303645 is a wasteful number, since it uses less digits than its factorization.

6445303645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117187355.

The product of its (nonzero) digits is 518400, while the sum is 40.

The square root of 6445303645 is about 80282.6484677729. The cubic root of 6445303645 is about 1861.0060889334.

The spelling of 6445303645 in words is "six billion, four hundred forty-five million, three hundred three thousand, six hundred forty-five".