63973361 has 8 divisors (see below), whose sum is σ = 67453920. Its totient is φ = 60504192.

The previous prime is 63973337. The next prime is 63973381. The reversal of 63973361 is 16337936.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63973361 - 2¹⁸ = 63711217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63973381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10286 + ... + 15288.

It is an arithmetic number, because the mean of its divisors is an integer number (8431740).

Almost surely, 2^63973361 is an apocalyptic number.

It is an amenable number.

63973361 is a deficient number, since it is larger than the sum of its proper divisors (3480559).

63973361 is a wasteful number, since it uses less digits than its factorization.

63973361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695.

The product of its digits is 61236, while the sum is 38.

The square root of 63973361 is about 7998.3348892129. The cubic root of 63973361 is about 399.9444943815.

The spelling of 63973361 in words is "sixty-three million, nine hundred seventy-three thousand, three hundred sixty-one".