63072643 has 4 divisors (see below), whose sum is σ = 63098560. Its totient is φ = 63046728.

The previous prime is 63072641. The next prime is 63072649. The reversal of 63072643 is 34627036.

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

It is a cyclic number.

It is not a de Polignac number, because 63072643 - 2¹ = 63072641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63072641) 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, 8880 + ... + 14317.

It is an arithmetic number, because the mean of its divisors is an integer number (15774640).

Almost surely, 2^63072643 is an apocalyptic number.

63072643 is a deficient number, since it is larger than the sum of its proper divisors (25917).

63072643 is a wasteful number, since it uses less digits than its factorization.

63072643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25916.

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

The square root of 63072643 is about 7941.8286936952. The cubic root of 63072643 is about 398.0585988986.

Adding to 63072643 its reverse (34627036), we get a palindrome (97699679).

The spelling of 63072643 in words is "sixty-three million, seventy-two thousand, six hundred forty-three".