63495668 has 6 divisors (see below), whose sum is σ = 111117426. Its totient is φ = 31747832.

The previous prime is 63495659. The next prime is 63495673. The reversal of 63495668 is 86659436.

It can be written as a sum of positive squares in only one way, i.e., 42354064 + 21141604 = 6508^2 + 4598^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7936955 + ... + 7936962.

It is an arithmetic number, because the mean of its divisors is an integer number (18519571).

Almost surely, 2^63495668 is an apocalyptic number.

It is an amenable number.

63495668 is a deficient number, since it is larger than the sum of its proper divisors (47621758).

63495668 is a wasteful number, since it uses less digits than its factorization.

63495668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15873921 (or 15873919 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The square root of 63495668 is about 7968.4169067639. The cubic root of 63495668 is about 398.9465363046.

The spelling of 63495668 in words is "sixty-three million, four hundred ninety-five thousand, six hundred sixty-eight".