63393997 has 8 divisors (see below), whose sum is σ = 65007360. Its totient is φ = 61787040.

The previous prime is 63393991. The next prime is 63394007. The reversal of 63393997 is 79939336.

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 63393997 - 2¹¹ = 63391949 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 63393997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63393991) 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, 23172 + ... + 25762.

It is an arithmetic number, because the mean of its divisors is an integer number (8125920).

Almost surely, 2^63393997 is an apocalyptic number.

It is an amenable number.

63393997 is a deficient number, since it is larger than the sum of its proper divisors (1613363).

63393997 is a wasteful number, since it uses less digits than its factorization.

63393997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203.

The product of its digits is 826686, while the sum is 49.

The square root of 63393997 is about 7962.0347273797. The cubic root of 63393997 is about 398.7334878498.

The spelling of 63393997 in words is "sixty-three million, three hundred ninety-three thousand, nine hundred ninety-seven".