63645797 has 8 divisors (see below), whose sum is σ = 64896000. Its totient is φ = 62406864.

The previous prime is 63645787. The next prime is 63645823. The reversal of 63645797 is 79754636.

It is a happy number.

63645797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63645797 - 2⁸ = 63645541 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 (63645727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9068 + ... + 14474.

It is an arithmetic number, because the mean of its divisors is an integer number (8112000).

Almost surely, 2^63645797 is an apocalyptic number.

It is an amenable number.

63645797 is a deficient number, since it is larger than the sum of its proper divisors (1250203).

63645797 is a wasteful number, since it uses less digits than its factorization.

63645797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635.

The product of its digits is 952560, while the sum is 47.

The square root of 63645797 is about 7977.8315976210. The cubic root of 63645797 is about 399.2607115566.

The spelling of 63645797 in words is "sixty-three million, six hundred forty-five thousand, seven hundred ninety-seven".