64496273 has 4 divisors (see below), whose sum is σ = 64852788. Its totient is φ = 64139760.

The previous prime is 64496269. The next prime is 64496293. The reversal of 64496273 is 37269446.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4464769 + 60031504 = 2113^2 + 7748^2 .

It is a cyclic number.

It is not a de Polignac number, because 64496273 - 2² = 64496269 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 64496273.

It is not an unprimeable number, because it can be changed into a prime (64496233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177986 + ... + 178347.

It is an arithmetic number, because the mean of its divisors is an integer number (16213197).

Almost surely, 2^64496273 is an apocalyptic number.

It is an amenable number.

64496273 is a deficient number, since it is larger than the sum of its proper divisors (356515).

64496273 is a wasteful number, since it uses less digits than its factorization.

64496273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356514.

The product of its digits is 217728, while the sum is 41.

The square root of 64496273 is about 8030.9571658676. The cubic root of 64496273 is about 401.0312411528.

The spelling of 64496273 in words is "sixty-four million, four hundred ninety-six thousand, two hundred seventy-three".