64658243 has 4 divisors (see below), whose sum is σ = 69631968. Its totient is φ = 59684520.

The previous prime is 64658227. The next prime is 64658257. The reversal of 64658243 is 34285646.

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

It is a cyclic number.

It is not a de Polignac number, because 64658243 - 2⁴ = 64658227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64658197 and 64658206.

It is not an unprimeable number, because it can be changed into a prime (64652243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2486843 + ... + 2486868.

It is an arithmetic number, because the mean of its divisors is an integer number (17407992).

Almost surely, 2^64658243 is an apocalyptic number.

64658243 is a deficient number, since it is larger than the sum of its proper divisors (4973725).

64658243 is a wasteful number, since it uses less digits than its factorization.

64658243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973724.

The product of its digits is 138240, while the sum is 38.

The square root of 64658243 is about 8041.0349458263. The cubic root of 64658243 is about 401.3666648335.

The spelling of 64658243 in words is "sixty-four million, six hundred fifty-eight thousand, two hundred forty-three".