63567894 has 32 divisors (see below), whose sum is σ = 138468960. Its totient is φ = 19337472.

The previous prime is 63567893. The next prime is 63567919. The reversal of 63567894 is 49876536.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63567893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2364 + ... + 11520.

It is an arithmetic number, because the mean of its divisors is an integer number (4327155).

Almost surely, 2^63567894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63567894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69234480).

63567894 is an abundant number, since it is smaller than the sum of its proper divisors (74901066).

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

63567894 is a wasteful number, since it uses less digits than its factorization.

63567894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9264.

The product of its digits is 1088640, while the sum is 48.

The square root of 63567894 is about 7972.9476355988. The cubic root of 63567894 is about 399.0977455391.

The spelling of 63567894 in words is "sixty-three million, five hundred sixty-seven thousand, eight hundred ninety-four".