63648419 has 4 divisors (see below), whose sum is σ = 64113144. Its totient is φ = 63183696.

The previous prime is 63648413. The next prime is 63648421. The reversal of 63648419 is 91484636.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63648419 - 2¹² = 63644323 is a prime.

It is a super-2 number, since 2×63648419² = 8102242482399122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63648413) 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, 232157 + ... + 232430.

It is an arithmetic number, because the mean of its divisors is an integer number (16028286).

Almost surely, 2^63648419 is an apocalyptic number.

63648419 is a deficient number, since it is larger than the sum of its proper divisors (464725).

63648419 is a wasteful number, since it uses less digits than its factorization.

63648419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464724.

The product of its digits is 124416, while the sum is 41.

The square root of 63648419 is about 7977.9959262963. The cubic root of 63648419 is about 399.2661942293.

The spelling of 63648419 in words is "sixty-three million, six hundred forty-eight thousand, four hundred nineteen".