63603947 has 16 divisors (see below), whose sum is σ = 73647360. Its totient is φ = 54357600.

The previous prime is 63603941. The next prime is 63603949. The reversal of 63603947 is 74930636.

It is a happy number.

It is not a de Polignac number, because 63603947 - 2²⁰ = 62555371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63603947.

It is not an unprimeable number, because it can be changed into a prime (63603941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12797 + ... + 17057.

It is an arithmetic number, because the mean of its divisors is an integer number (4602960).

Almost surely, 2^63603947 is an apocalyptic number.

63603947 is a deficient number, since it is larger than the sum of its proper divisors (10043413).

63603947 is a wasteful number, since it uses less digits than its factorization.

63603947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 63603947 is about 7975.2082731425. The cubic root of 63603947 is about 399.1731816896.

The spelling of 63603947 in words is "sixty-three million, six hundred three thousand, nine hundred forty-seven".