63813830 has 16 divisors (see below), whose sum is σ = 116320320. Its totient is φ = 25202112.

The previous prime is 63813829. The next prime is 63813853. The reversal of 63813830 is 3831836.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39599 + ... + 41178.

It is an arithmetic number, because the mean of its divisors is an integer number (7270020).

Almost surely, 2^63813830 is an apocalyptic number.

63813830 is a deficient number, since it is larger than the sum of its proper divisors (52506490).

63813830 is a wasteful number, since it uses less digits than its factorization.

63813830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80863.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 63813830 is about 7988.3559009348. The cubic root of 63813830 is about 399.6117691473.

The spelling of 63813830 in words is "sixty-three million, eight hundred thirteen thousand, eight hundred thirty".