63494666 has 16 divisors (see below), whose sum is σ = 96377856. Its totient is φ = 31370976.

The previous prime is 63494663. The next prime is 63494699. The reversal of 63494666 is 66649436.

It is a super-2 number, since 2×63494666² = 8063145220903112, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63494663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115805 + ... + 116351.

It is an arithmetic number, because the mean of its divisors is an integer number (6023616).

Almost surely, 2^63494666 is an apocalyptic number.

63494666 is a deficient number, since it is larger than the sum of its proper divisors (32883190).

63494666 is a wasteful number, since it uses less digits than its factorization.

63494666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133.

The product of its digits is 559872, while the sum is 44.

The square root of 63494666 is about 7968.3540332995. The cubic root of 63494666 is about 398.9444377544.

The spelling of 63494666 in words is "sixty-three million, four hundred ninety-four thousand, six hundred sixty-six".