64722773 has 8 divisors (see below), whose sum is σ = 65533440. Its totient is φ = 63917280.

The previous prime is 64722767. The next prime is 64722781. The reversal of 64722773 is 37722746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64722773 - 2¹⁰ = 64721749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64722703) 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 7 ways as a sum of consecutive naturals, for example, 27788 + ... + 30026.

It is an arithmetic number, because the mean of its divisors is an integer number (8191680).

Almost surely, 2^64722773 is an apocalyptic number.

It is an amenable number.

64722773 is a deficient number, since it is larger than the sum of its proper divisors (810667).

64722773 is a wasteful number, since it uses less digits than its factorization.

64722773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587.

The product of its digits is 98784, while the sum is 38.

The square root of 64722773 is about 8045.0464883679. The cubic root of 64722773 is about 401.5001439702.

The spelling of 64722773 in words is "sixty-four million, seven hundred twenty-two thousand, seven hundred seventy-three".