63980687 has 8 divisors (see below), whose sum is σ = 66857856. Its totient is φ = 61111512.

The previous prime is 63980671. The next prime is 63980717. The reversal of 63980687 is 78608936.

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

It is a cyclic number.

It is not a de Polignac number, because 63980687 - 2⁴ = 63980671 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 (63980647) 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, 19328 + ... + 22394.

It is an arithmetic number, because the mean of its divisors is an integer number (8357232).

Almost surely, 2^63980687 is an apocalyptic number.

63980687 is a deficient number, since it is larger than the sum of its proper divisors (2877169).

63980687 is a wasteful number, since it uses less digits than its factorization.

63980687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 63980687 is about 7998.7928464238. The cubic root of 63980687 is about 399.9597605354.

The spelling of 63980687 in words is "sixty-three million, nine hundred eighty thousand, six hundred eighty-seven".