63661016 has 32 divisors (see below), whose sum is σ = 123120000. Its totient is φ = 30836736.

The previous prime is 63660977. The next prime is 63661049. The reversal of 63661016 is 61016636.

It is a self number, because there is not a number n which added to its sum of digits gives 63661016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132665 + ... + 133143.

It is an arithmetic number, because the mean of its divisors is an integer number (3847500).

Almost surely, 2^63661016 is an apocalyptic number.

It is an amenable number.

63661016 is a deficient number, since it is larger than the sum of its proper divisors (59458984).

63661016 is a wasteful number, since it uses less digits than its factorization.

63661016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 63661016 is about 7978.7853712204. The cubic root of 63661016 is about 399.2925327964.

The spelling of 63661016 in words is "sixty-three million, six hundred sixty-one thousand, sixteen".