63664894 has 8 divisors (see below), whose sum is σ = 97116120. Its totient is φ = 31292856.

The previous prime is 63664879. The next prime is 63664903. The reversal of 63664894 is 49846636.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269649 + ... + 269884.

It is an arithmetic number, because the mean of its divisors is an integer number (12139515).

Almost surely, 2^63664894 is an apocalyptic number.

63664894 is a deficient number, since it is larger than the sum of its proper divisors (33451226).

63664894 is a wasteful number, since it uses less digits than its factorization.

63664894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539594.

The product of its digits is 746496, while the sum is 46.

The square root of 63664894 is about 7979.0283869654. The cubic root of 63664894 is about 399.3006404532.

The spelling of 63664894 in words is "sixty-three million, six hundred sixty-four thousand, eight hundred ninety-four".