64397203 has 4 divisors (see below), whose sum is σ = 69350848. Its totient is φ = 59443560.

The previous prime is 64397189. The next prime is 64397243. The reversal of 64397203 is 30279346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64397203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64397243) 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, 2476803 + ... + 2476828.

It is an arithmetic number, because the mean of its divisors is an integer number (17337712).

Almost surely, 2^64397203 is an apocalyptic number.

64397203 is a deficient number, since it is larger than the sum of its proper divisors (4953645).

64397203 is a wasteful number, since it uses less digits than its factorization.

64397203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4953644.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 64397203 is about 8024.7867884449. The cubic root of 64397203 is about 400.8258002118.

The spelling of 64397203 in words is "sixty-four million, three hundred ninety-seven thousand, two hundred three".