63960686 has 4 divisors (see below), whose sum is σ = 95941032. Its totient is φ = 31980342.

The previous prime is 63960671. The next prime is 63960727. The reversal of 63960686 is 68606936.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15990170 + ... + 15990173.

It is an arithmetic number, because the mean of its divisors is an integer number (23985258).

Almost surely, 2^63960686 is an apocalyptic number.

63960686 is a deficient number, since it is larger than the sum of its proper divisors (31980346).

63960686 is a wasteful number, since it uses less digits than its factorization.

63960686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980345.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 63960686 is about 7997.5424975426. The cubic root of 63960686 is about 399.9180790569.

It can be divided in two parts, 63960 and 686, that added together give a palindrome (64646).

The spelling of 63960686 in words is "sixty-three million, nine hundred sixty thousand, six hundred eighty-six".