63304645 has 4 divisors (see below), whose sum is σ = 75965580. Its totient is φ = 50643712.

The previous prime is 63304627. The next prime is 63304649. The reversal of 63304645 is 54640336.

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 15984004 + 47320641 = 3998^2 + 6879^2 .

It is a cyclic number.

It is not a de Polignac number, because 63304645 - 2⁹ = 63304133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63304649) 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, 6330460 + ... + 6330469.

It is an arithmetic number, because the mean of its divisors is an integer number (18991395).

Almost surely, 2^63304645 is an apocalyptic number.

It is an amenable number.

63304645 is a deficient number, since it is larger than the sum of its proper divisors (12660935).

63304645 is a wasteful number, since it uses less digits than its factorization.

63304645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12660934.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 63304645 is about 7956.4216203014. The cubic root of 63304645 is about 398.5460653381.

The spelling of 63304645 in words is "sixty-three million, three hundred four thousand, six hundred forty-five".