63783970 has 8 divisors (see below), whose sum is σ = 114811164. Its totient is φ = 25513584.

The previous prime is 63783961. The next prime is 63783971. The reversal of 63783970 is 7938736.

It can be written as a sum of positive squares in 2 ways, for example, as 61826769 + 1957201 = 7863^2 + 1399^2 .

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

It is not an unprimeable number, because it can be changed into a prime (63783971) 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 3 ways as a sum of consecutive naturals, for example, 3189189 + ... + 3189208.

Almost surely, 2^63783970 is an apocalyptic number.

63783970 is a deficient number, since it is larger than the sum of its proper divisors (51027194).

63783970 is a wasteful number, since it uses less digits than its factorization.

63783970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6378404.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 63783970 is about 7986.4867119404. The cubic root of 63783970 is about 399.5494301576.

The spelling of 63783970 in words is "sixty-three million, seven hundred eighty-three thousand, nine hundred seventy".