63143820 has 48 divisors (see below), whose sum is σ = 196449120. Its totient is φ = 16838208.

The previous prime is 63143777. The next prime is 63143837. The reversal of 63143820 is 2834136.

It is a happy number.

63143820 is a `hidden beast` number, since 631 + 4 + 3 + 8 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 57927 + ... + 59006.

It is an arithmetic number, because the mean of its divisors is an integer number (4092690).

Almost surely, 2^63143820 is an apocalyptic number.

63143820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63143820 is an abundant number, since it is smaller than the sum of its proper divisors (133305300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63143820 is a wasteful number, since it uses less digits than its factorization.

63143820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116951 (or 116943 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 63143820 is about 7946.3085769431. The cubic root of 63143820 is about 398.2082779803.

Adding to 63143820 its reverse (2834136), we get a palindrome (65977956).

The spelling of 63143820 in words is "sixty-three million, one hundred forty-three thousand, eight hundred twenty".