64722733 has 2 divisors, whose sum is σ = 64722734. Its totient is φ = 64722732.

The previous prime is 64722727. The next prime is 64722739. The reversal of 64722733 is 33722746.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (64722727) and next prime (64722739).

It can be written as a sum of positive squares in only one way, i.e., 62932489 + 1790244 = 7933^2 + 1338^2 .

It is a cyclic number.

It is not a de Polignac number, because 64722733 - 2⁹ = 64722221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64722739) 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 as a sum of consecutive naturals, namely, 32361366 + 32361367.

It is an arithmetic number, because the mean of its divisors is an integer number (32361367).

Almost surely, 2^64722733 is an apocalyptic number.

It is an amenable number.

64722733 is a deficient number, since it is larger than the sum of its proper divisors (1).

64722733 is an equidigital number, since it uses as much as digits as its factorization.

64722733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 34.

The square root of 64722733 is about 8045.0440023657. The cubic root of 64722733 is about 401.5000612584.

The spelling of 64722733 in words is "sixty-four million, seven hundred twenty-two thousand, seven hundred thirty-three".