63516071 has 4 divisors (see below), whose sum is σ = 63578592. Its totient is φ = 63453552.

The previous prime is 63516043. The next prime is 63516073. The reversal of 63516071 is 17061536.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63516071 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 (63516073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29711 + ... + 31776.

It is an arithmetic number, because the mean of its divisors is an integer number (15894648).

Almost surely, 2^63516071 is an apocalyptic number.

63516071 is a deficient number, since it is larger than the sum of its proper divisors (62521).

63516071 is a wasteful number, since it uses less digits than its factorization.

63516071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62520.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 63516071 is about 7969.6970456850. The cubic root of 63516071 is about 398.9892627601.

The spelling of 63516071 in words is "sixty-three million, five hundred sixteen thousand, seventy-one".