63147678 has 64 divisors (see below), whose sum is σ = 149057280. Its totient is φ = 17625600.

The previous prime is 63147631. The next prime is 63147683. The reversal of 63147678 is 87674136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45718 + ... + 47078.

It is an arithmetic number, because the mean of its divisors is an integer number (2329020).

Almost surely, 2^63147678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63147678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74528640).

63147678 is an abundant number, since it is smaller than the sum of its proper divisors (85909602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63147678 is a wasteful number, since it uses less digits than its factorization.

63147678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433.

The product of its digits is 169344, while the sum is 42.

The square root of 63147678 is about 7946.5513274628. The cubic root of 63147678 is about 398.2163878067.

It can be divided in two parts, 63 and 147678, that added together give a palindrome (147741).

The spelling of 63147678 in words is "sixty-three million, one hundred forty-seven thousand, six hundred seventy-eight".