63689479 has 8 divisors (see below), whose sum is σ = 73235840. Its totient is φ = 54255096.

The previous prime is 63689473. The next prime is 63689491. The reversal of 63689479 is 97498636.

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

It is not a de Polignac number, because 63689479 - 2³ = 63689471 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 (63689471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26769 + ... + 29050.

It is an arithmetic number, because the mean of its divisors is an integer number (9154480).

Almost surely, 2^63689479 is an apocalyptic number.

63689479 is a deficient number, since it is larger than the sum of its proper divisors (9546361).

63689479 is a wasteful number, since it uses less digits than its factorization.

63689479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55989.

The product of its digits is 1959552, while the sum is 52.

The square root of 63689479 is about 7980.5688393748. The cubic root of 63689479 is about 399.3520321610.

The spelling of 63689479 in words is "sixty-three million, six hundred eighty-nine thousand, four hundred seventy-nine".