66463894 has 12 divisors (see below), whose sum is σ = 115972884. Its totient is φ = 28484484.

The previous prime is 66463889. The next prime is 66463921. The reversal of 66463894 is 49836466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339004 + ... + 339199.

It is an arithmetic number, because the mean of its divisors is an integer number (9664407).

Almost surely, 2^66463894 is an apocalyptic number.

66463894 is a deficient number, since it is larger than the sum of its proper divisors (49508990).

66463894 is a wasteful number, since it uses less digits than its factorization.

66463894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678219 (or 678212 counting only the distinct ones).

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

The square root of 66463894 is about 8152.5391136750. The cubic root of 66463894 is about 405.0686140925.

The spelling of 66463894 in words is "sixty-six million, four hundred sixty-three thousand, eight hundred ninety-four".