63894718 has 4 divisors (see below), whose sum is σ = 95842080. Its totient is φ = 31947358.

The previous prime is 63894709. The next prime is 63894737. The reversal of 63894718 is 81749836.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15973678 + ... + 15973681.

It is an arithmetic number, because the mean of its divisors is an integer number (23960520).

Almost surely, 2^63894718 is an apocalyptic number.

63894718 is a deficient number, since it is larger than the sum of its proper divisors (31947362).

63894718 is a wasteful number, since it uses less digits than its factorization.

63894718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31947361.

The product of its digits is 290304, while the sum is 46.

The square root of 63894718 is about 7993.4171666441. The cubic root of 63894718 is about 399.7805421176.

The spelling of 63894718 in words is "sixty-three million, eight hundred ninety-four thousand, seven hundred eighteen".