63670243 has 24 divisors (see below), whose sum is σ = 79688448. Its totient is φ = 49806432.

The previous prime is 63670241. The next prime is 63670247. The reversal of 63670243 is 34207636.

It is not a de Polignac number, because 63670243 - 2¹ = 63670241 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (63670241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126330 + ... + 126832.

It is an arithmetic number, because the mean of its divisors is an integer number (3320352).

Almost surely, 2^63670243 is an apocalyptic number.

63670243 is a deficient number, since it is larger than the sum of its proper divisors (16018205).

63670243 is a wasteful number, since it uses less digits than its factorization.

63670243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 63670243 is about 7979.3635711127. The cubic root of 63670243 is about 399.3118229599.

Adding to 63670243 its reverse (34207636), we get a palindrome (97877879).

The spelling of 63670243 in words is "sixty-three million, six hundred seventy thousand, two hundred forty-three".