63645197 has 8 divisors (see below), whose sum is σ = 79349952. Its totient is φ = 49593600.

The previous prime is 63645187. The next prime is 63645221. The reversal of 63645197 is 79154636.

63645197 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 not a de Polignac number, because 63645197 - 2¹⁰ = 63644173 is a prime.

It is a super-2 number, since 2×63645197² = 8101422202337618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63645157) 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, 413204 + ... + 413357.

It is an arithmetic number, because the mean of its divisors is an integer number (9918744).

Almost surely, 2^63645197 is an apocalyptic number.

It is an amenable number.

63645197 is a deficient number, since it is larger than the sum of its proper divisors (15704755).

63645197 is a wasteful number, since it uses less digits than its factorization.

63645197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826579.

The product of its digits is 136080, while the sum is 41.

The square root of 63645197 is about 7977.7939933292. The cubic root of 63645197 is about 399.2594569193.

The spelling of 63645197 in words is "sixty-three million, six hundred forty-five thousand, one hundred ninety-seven".