63325681 has 8 divisors (see below), whose sum is σ = 64368000. Its totient is φ = 62287680.

The previous prime is 63325631. The next prime is 63325709. The reversal of 63325681 is 18652336.

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

It is a cyclic number.

It is not a de Polignac number, because 63325681 - 2⁹ = 63325169 is a prime.

It is a super-2 number, since 2×63325681² = 8020283748227522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63325631) 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, 41785 + ... + 43273.

It is an arithmetic number, because the mean of its divisors is an integer number (8046000).

Almost surely, 2^63325681 is an apocalyptic number.

It is an amenable number.

63325681 is a deficient number, since it is larger than the sum of its proper divisors (1042319).

63325681 is a wasteful number, since it uses less digits than its factorization.

63325681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159.

The product of its digits is 25920, while the sum is 34.

The square root of 63325681 is about 7957.7434615599. The cubic root of 63325681 is about 398.5902057882.

The spelling of 63325681 in words is "sixty-three million, three hundred twenty-five thousand, six hundred eighty-one".