63780634 has 8 divisors (see below), whose sum is σ = 101298708. Its totient is φ = 30014400.

The previous prime is 63780631. The next prime is 63780641. The reversal of 63780634 is 43608736.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61575409 + 2205225 = 7847^2 + 1485^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 63780593 and 63780602.

It is not an unprimeable number, because it can be changed into a prime (63780631) 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, 937917 + ... + 937984.

Almost surely, 2^63780634 is an apocalyptic number.

63780634 is a deficient number, since it is larger than the sum of its proper divisors (37518074).

63780634 is a wasteful number, since it uses less digits than its factorization.

63780634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875920.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 63780634 is about 7986.2778564235. The cubic root of 63780634 is about 399.5424643524.

The spelling of 63780634 in words is "sixty-three million, seven hundred eighty thousand, six hundred thirty-four".