63172642 has 8 divisors (see below), whose sum is σ = 102048156. Its totient is φ = 29156592.

The previous prime is 63172639. The next prime is 63172649. The reversal of 63172642 is 24627136.

It can be written as a sum of positive squares in 2 ways, for example, as 62869041 + 303601 = 7929^2 + 551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (63172649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214833 + ... + 1214884.

Almost surely, 2^63172642 is an apocalyptic number.

63172642 is a deficient number, since it is larger than the sum of its proper divisors (38875514).

63172642 is a wasteful number, since it uses less digits than its factorization.

63172642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429732.

The product of its digits is 12096, while the sum is 31.

The square root of 63172642 is about 7948.1219165285. The cubic root of 63172642 is about 398.2688561608.

Adding to 63172642 its reverse (24627136), we get a palindrome (87799778).

The spelling of 63172642 in words is "sixty-three million, one hundred seventy-two thousand, six hundred forty-two".