63821234 has 4 divisors (see below), whose sum is σ = 95731854. Its totient is φ = 31910616.

The previous prime is 63821231. The next prime is 63821237. The reversal of 63821234 is 43212836.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (63821231) and next prime (63821237).

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 61009 = 7985^2 + 247^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63821197 and 63821206.

It is not an unprimeable number, because it can be changed into a prime (63821231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15955307 + ... + 15955310.

Almost surely, 2^63821234 is an apocalyptic number.

63821234 is a deficient number, since it is larger than the sum of its proper divisors (31910620).

63821234 is a wasteful number, since it uses less digits than its factorization.

63821234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31910619.

The product of its digits is 6912, while the sum is 29.

The square root of 63821234 is about 7988.8193120135. The cubic root of 63821234 is about 399.6272235355.

The spelling of 63821234 in words is "sixty-three million, eight hundred twenty-one thousand, two hundred thirty-four".