64682197 has 4 divisors (see below), whose sum is σ = 64911040. Its totient is φ = 64453356.

The previous prime is 64682173. The next prime is 64682201. The reversal of 64682197 is 79128646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64682197 - 2⁷ = 64682069 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 (64685197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113997 + ... + 114562.

It is an arithmetic number, because the mean of its divisors is an integer number (16227760).

Almost surely, 2^64682197 is an apocalyptic number.

It is an amenable number.

64682197 is a deficient number, since it is larger than the sum of its proper divisors (228843).

64682197 is a wasteful number, since it uses less digits than its factorization.

64682197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228842.

The product of its digits is 145152, while the sum is 43.

The square root of 64682197 is about 8042.5242927827. The cubic root of 64682197 is about 401.4162236090.

The spelling of 64682197 in words is "sixty-four million, six hundred eighty-two thousand, one hundred ninety-seven".