64206273 has 4 divisors (see below), whose sum is σ = 85608368. Its totient is φ = 42804180.

The previous prime is 64206253. The next prime is 64206349. The reversal of 64206273 is 37260246.

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 64206273 - 2⁹ = 64205761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64206273.

It is not an unprimeable number, because it can be changed into a prime (64206253) 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, 10701043 + ... + 10701048.

It is an arithmetic number, because the mean of its divisors is an integer number (21402092).

Almost surely, 2^64206273 is an apocalyptic number.

It is an amenable number.

64206273 is a deficient number, since it is larger than the sum of its proper divisors (21402095).

64206273 is a wasteful number, since it uses less digits than its factorization.

64206273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21402094.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 64206273 is about 8012.8816913767. The cubic root of 64206273 is about 400.4292745602.

The spelling of 64206273 in words is "sixty-four million, two hundred six thousand, two hundred seventy-three".