64948769 has 2 divisors, whose sum is σ = 64948770. Its totient is φ = 64948768.

The previous prime is 64948759. The next prime is 64948781. The reversal of 64948769 is 96784946.

It is a happy number.

64948769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32913169 + 32035600 = 5737^2 + 5660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64948769 is a prime.

It is a super-2 number, since 2×64948769² = 8436685189230722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64948769.

It is not a weakly prime, because it can be changed into another prime (64948739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32474384 + 32474385.

It is an arithmetic number, because the mean of its divisors is an integer number (32474385).

Almost surely, 2^64948769 is an apocalyptic number.

It is an amenable number.

64948769 is a deficient number, since it is larger than the sum of its proper divisors (1).

64948769 is an equidigital number, since it uses as much as digits as its factorization.

64948769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 53.

The square root of 64948769 is about 8059.0799102627. The cubic root of 64948769 is about 401.9669143500.

The spelling of 64948769 in words is "sixty-four million, nine hundred forty-eight thousand, seven hundred sixty-nine".