63321745 has 8 divisors (see below), whose sum is σ = 76035240. Its totient is φ = 50624640.

The previous prime is 63321707. The next prime is 63321749. The reversal of 63321745 is 54712336.

63321745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 484416 + 62837329 = 696^2 + 7927^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-63321745 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63321749) 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 7 ways as a sum of consecutive naturals, for example, 7285 + ... + 13405.

It is an arithmetic number, because the mean of its divisors is an integer number (9504405).

Almost surely, 2^63321745 is an apocalyptic number.

It is an amenable number.

63321745 is a deficient number, since it is larger than the sum of its proper divisors (12713495).

63321745 is a wasteful number, since it uses less digits than its factorization.

63321745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8195.

The product of its digits is 15120, while the sum is 31.

The square root of 63321745 is about 7957.4961514285. The cubic root of 63321745 is about 398.5819475085.

The spelling of 63321745 in words is "sixty-three million, three hundred twenty-one thousand, seven hundred forty-five".