64430193 has 4 divisors (see below), whose sum is σ = 85906928. Its totient is φ = 42953460.

The previous prime is 64430189. The next prime is 64430207. The reversal of 64430193 is 39103446.

64430193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 64430193 - 2² = 64430189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64430193.

It is not an unprimeable number, because it can be changed into a prime (64430293) 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 3 ways as a sum of consecutive naturals, for example, 10738363 + ... + 10738368.

It is an arithmetic number, because the mean of its divisors is an integer number (21476732).

Almost surely, 2^64430193 is an apocalyptic number.

It is an amenable number.

64430193 is a deficient number, since it is larger than the sum of its proper divisors (21476735).

64430193 is a wasteful number, since it uses less digits than its factorization.

64430193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21476734.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 64430193 is about 8026.8420315838. The cubic root of 64430193 is about 400.8942347873.

The spelling of 64430193 in words is "sixty-four million, four hundred thirty thousand, one hundred ninety-three".