63213642 has 32 divisors (see below), whose sum is σ = 140745600. Its totient is φ = 21030624.

The previous prime is 63213641. The next prime is 63213653. The reversal of 63213642 is 24631236.

63213642 is a `hidden beast` number, since 6 + 3 + 2 + 13 + 642 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (63213641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42963 + ... + 44409.

It is an arithmetic number, because the mean of its divisors is an integer number (4398300).

Almost surely, 2^63213642 is an apocalyptic number.

63213642 is an abundant number, since it is smaller than the sum of its proper divisors (77531958).

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

63213642 is a wasteful number, since it uses less digits than its factorization.

63213642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267 (or 2261 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 63213642 is about 7950.7007238356. The cubic root of 63213642 is about 398.3549983645.

Adding to 63213642 its reverse (24631236), we get a palindrome (87844878).

The spelling of 63213642 in words is "sixty-three million, two hundred thirteen thousand, six hundred forty-two".