63197647 has 4 divisors (see below), whose sum is σ = 64233736. Its totient is φ = 62161560.

The previous prime is 63197621. The next prime is 63197663. The reversal of 63197647 is 74679136.

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 63197647 - 2²³ = 54809039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63198647) 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, 517953 + ... + 518074.

It is an arithmetic number, because the mean of its divisors is an integer number (16058434).

Almost surely, 2^63197647 is an apocalyptic number.

63197647 is a deficient number, since it is larger than the sum of its proper divisors (1036089).

63197647 is a wasteful number, since it uses less digits than its factorization.

63197647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036088.

The product of its digits is 190512, while the sum is 43.

The square root of 63197647 is about 7949.6947740149. The cubic root of 63197647 is about 398.3213968323.

The spelling of 63197647 in words is "sixty-three million, one hundred ninety-seven thousand, six hundred forty-seven".