63117647 has 4 divisors (see below), whose sum is σ = 64308600. Its totient is φ = 61926696.

The previous prime is 63117631. The next prime is 63117653. The reversal of 63117647 is 74671136.

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 63117647 - 2⁴ = 63117631 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 (63114647) 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, 595397 + ... + 595502.

It is an arithmetic number, because the mean of its divisors is an integer number (16077150).

Almost surely, 2^63117647 is an apocalyptic number.

63117647 is a deficient number, since it is larger than the sum of its proper divisors (1190953).

63117647 is a wasteful number, since it uses less digits than its factorization.

63117647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190952.

The product of its digits is 21168, while the sum is 35.

The square root of 63117647 is about 7944.6615409343. The cubic root of 63117647 is about 398.1532515048.

The spelling of 63117647 in words is "sixty-three million, one hundred seventeen thousand, six hundred forty-seven".