63426818 has 32 divisors (see below), whose sum is σ = 118226304. Its totient is φ = 24849792.

The previous prime is 63426761. The next prime is 63426821. The reversal of 63426818 is 81862436.

It is a happy number.

It is a super-2 number, since 2×63426818² = 8045922483210248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17846 + ... + 21102.

It is an arithmetic number, because the mean of its divisors is an integer number (3694572).

Almost surely, 2^63426818 is an apocalyptic number.

63426818 is a deficient number, since it is larger than the sum of its proper divisors (54799486).

63426818 is a wasteful number, since it uses less digits than its factorization.

63426818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386.

The product of its digits is 55296, while the sum is 38.

The square root of 63426818 is about 7964.0955544242. The cubic root of 63426818 is about 398.8022881285.

The spelling of 63426818 in words is "sixty-three million, four hundred twenty-six thousand, eight hundred eighteen".