6355320645 has 16 divisors (see below), whose sum is σ = 10190581632. Its totient is φ = 3382148160.

The previous prime is 6355320619. The next prime is 6355320677. The reversal of 6355320645 is 5460235536.

It is not a de Polignac number, because 6355320645 - 2⁶ = 6355320581 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452617 + ... + 466446.

It is an arithmetic number, because the mean of its divisors is an integer number (636911352).

Almost surely, 2^6355320645 is an apocalyptic number.

It is an amenable number.

6355320645 is a deficient number, since it is larger than the sum of its proper divisors (3835260987).

6355320645 is a wasteful number, since it uses less digits than its factorization.

6355320645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919532.

The product of its (nonzero) digits is 324000, while the sum is 39.

The square root of 6355320645 is about 79720.2649581648. The cubic root of 6355320645 is about 1852.3049570552.

The spelling of 6355320645 in words is "six billion, three hundred fifty-five million, three hundred twenty thousand, six hundred forty-five".