63616573 has 4 divisors (see below), whose sum is σ = 64694880. Its totient is φ = 62538268.

The previous prime is 63616571. The next prime is 63616583. The reversal of 63616573 is 37561636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63616573 - 2¹ = 63616571 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 (63616571) 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, 539065 + ... + 539182.

It is an arithmetic number, because the mean of its divisors is an integer number (16173720).

Almost surely, 2^63616573 is an apocalyptic number.

It is an amenable number.

63616573 is a deficient number, since it is larger than the sum of its proper divisors (1078307).

63616573 is a wasteful number, since it uses less digits than its factorization.

63616573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078306.

The product of its digits is 68040, while the sum is 37.

The square root of 63616573 is about 7975.9998119358. Note that the first 3 decimals coincide. The cubic root of 63616573 is about 399.1995931906.

The spelling of 63616573 in words is "sixty-three million, six hundred sixteen thousand, five hundred seventy-three".