63688677 has 8 divisors (see below), whose sum is σ = 91450464. Its totient is φ = 39193008.

The previous prime is 63688657. The next prime is 63688693. The reversal of 63688677 is 77688636.

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

It is not a de Polignac number, because 63688677 - 2⁸ = 63688421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63688637) 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, 816483 + ... + 816560.

It is an arithmetic number, because the mean of its divisors is an integer number (11431308).

Almost surely, 2^63688677 is an apocalyptic number.

It is an amenable number.

63688677 is a deficient number, since it is larger than the sum of its proper divisors (27761787).

63688677 is a wasteful number, since it uses less digits than its factorization.

63688677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633059.

The product of its digits is 2032128, while the sum is 51.

The square root of 63688677 is about 7980.5185921718. The cubic root of 63688677 is about 399.3503558942.

The spelling of 63688677 in words is "sixty-three million, six hundred eighty-eight thousand, six hundred seventy-seven".