63861222 has 16 divisors (see below), whose sum is σ = 128570112. Its totient is φ = 21145800.

The previous prime is 63861221. The next prime is 63861233. The reversal of 63861222 is 22216836.

It is a self number, because there is not a number n which added to its sum of digits gives 63861222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63861221) 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, 34338 + ... + 36149.

It is an arithmetic number, because the mean of its divisors is an integer number (8035632).

Almost surely, 2^63861222 is an apocalyptic number.

63861222 is an abundant number, since it is smaller than the sum of its proper divisors (64708890).

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

63861222 is a wasteful number, since it uses less digits than its factorization.

63861222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70643.

The product of its digits is 6912, while the sum is 30.

The square root of 63861222 is about 7991.3216679095. The cubic root of 63861222 is about 399.7106699374.

The spelling of 63861222 in words is "sixty-three million, eight hundred sixty-one thousand, two hundred twenty-two".