63778849 has 8 divisors (see below), whose sum is σ = 67804128. Its totient is φ = 59784000.

The previous prime is 63778837. The next prime is 63778853. The reversal of 63778849 is 94887736.

It is a happy number.

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 63778849 - 2⁵ = 63778817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63778796 and 63778805.

It is not an unprimeable number, because it can be changed into a prime (63778829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3207 + ... + 11740.

It is an arithmetic number, because the mean of its divisors is an integer number (8475516).

Almost surely, 2^63778849 is an apocalyptic number.

It is an amenable number.

63778849 is a deficient number, since it is larger than the sum of its proper divisors (4025279).

63778849 is a wasteful number, since it uses less digits than its factorization.

63778849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15215.

The product of its digits is 2032128, while the sum is 52.

The square root of 63778849 is about 7986.1661014532. The cubic root of 63778849 is about 399.5387370457.

The spelling of 63778849 in words is "sixty-three million, seven hundred seventy-eight thousand, eight hundred forty-nine".